WebBrowser可以使用WebBrowser控件向Windows窗体客户端应用程序添加现有的动态的Web应用程序。使用WebBrowser控件，可以通过ObjectForScripting和Document属性在客户端应用程序代码和网页脚本代码之间实现双向通信。此外，可以对WebBrowser控件进行配置，使Web控件可以与应用程序窗体上的其他控件进行无缝整合，从而隐藏其HTML实现。若要使控件无缝整合，请对所显示页的格式进行设置，使其背景颜色和视觉样式与窗体的其余部分匹配，然后使用AllowWebBrowserDrop、 IsWebBrowserContextMenuEnabled和WebBrowserShortcutsEnabled属性禁用标准浏览器功能。webBrowser1.AllowWebBrowserDrop = false;//将 WebBrowser 控件的 AllowWebBrowserDrop 属性设置为 false，以防止 WebBrowser 控件打开拖放到其上的文件。 webBrowser1.IsWebBrowserContextMenuEnabled = false;//将该控件的 IsWebBrowserContextMenuEnabled 属性设置为 false，以防止 WebBrowser 控件在用户右击它时显示其快捷菜单. webBrowser1.WebBrowserShortcutsEnabled = false;//将该控件的 WebBrowserShortcutsEnabled 属性设置为 false，以防止 WebBrowser 控件响应快捷键。 webBrowser1.ScriptErrorsSuppressed=true;//将该控件的 ScriptErrorsSuppressed 属性设置为 true，以防止 WebBrowser 控件显示脚本代码问题的错误信息。WebBrowser不单单只做一个浏览器的功能吧，既然是winform程序，那么就牵涉到网页的程序(主要是javascript)和winform本身的程序怎样交互呢？一些Javascript无法实现的功能，可以通过javascript调用Winform里的方法去完成。1.在窗体的构造函数或者Load事件处理程序中设置ObjectForScripting属性：下面代码将窗体类自身用于脚本对象。(组件对象模型(COM)必须能够访问脚本对象,若要使窗体对 COM 可见，请将 ComVisibleAttribute 属性添加到窗体类中)webBrowser1.ObjectForScripting = this;在窗体类自身设置Attribute[PermissionSet(SecurityAction.Demand, Name="FullTrust")] [System.Runtime.InteropServices.ComVisibleAttribute(true)] public class Form1 : Form {}2.在应用程序中实现脚本代码将要调用的winform的公共属性和方法。public string InvokeFormMethod(string message) { MessageBox.Show(message,"Client Code") return "Charles2008" }3.在脚本代码中使用window.external对象访问指定对象的公共属性和方法。 4.在脚本文件中添加JavaScript函数(winform程序将要调用的). 5.使用WebBrowser的Document 属性从客户端应用程序代码访问脚本代码。this.webBrowser1.Document.InvokeScript("msgalert", new string[] { "Called Javascript code" });下面是一个完整的实例：[PermissionSet(SecurityAction.Demand, Name = "FullTrust")] [System.Runtime.InteropServices.ComVisibleAttribute(true)] public partial class Main : Form { public Main() { InitializeComponent(); } private void button4_Click(object sender, EventArgs e) { this.webBrowser1.Navigate(this.textBox1.Text); this.webBrowser1.ObjectForScripting = this; } #region JavaScript中调用的方法 public string InvokeFormMethod(string message) { MessageBox.Show(message); return "Somthing"; } #endregion #region 调用Javascript方法 private void button6_Click(object sender, EventArgs e) { this.webBrowser1.Document.InvokeScript("msgalert", new string[] { "Called from client code" }); } #endregion }脚本错误的解决方案当IE浏览器遇到脚本错误时，在浏览器左下角会出现一个黄色图标，点击可以查看脚本错误的详细信息，并不会有弹出的错误信息框。我们在用webBrowser编写的程序打开网页，遇到脚本有问题是，会弹出一个错误提示框，需要确认后才能够进行执行， 在winform程序中这会影响用户的使用体验。那么，在使用WebBrowser打开网页遇到脚本错误时如何处理才能让程序无干扰的自动运行呢？WebBrowser给我们提供了一个属性：ScriptErrorsSuppressed 。当不想再遇到脚本错误时弹出错误提示框，可以将该值设为TRUE。WebBrowser.ScriptErrorsSuppressed = true;ScriptErrorsSuppressed 属性的具体的用法如下：将此属性设置为 false 可调试显示在 WebBrowser 控件中的网页。如果要使用该控件向应用程序添加基于 Web 的控件和脚本代码，则此属性十分有用。如果将该控件用作泛型浏览器，则此属性用处不大。完成应用程序的调试后，将此属性设置为 true 以取消显示脚本错误。注意：当 ScriptErrorsSuppressed 设置为 true 时，WebBrowser 控件将隐藏其源自基础 ActiveX 控件的所有对话框，而不仅仅是脚本错误。有时，在显示某些对话框（例如，用于浏览器安全设置和用户登录的对话框）时，可能需要取消显示脚本错误。在这种情况下，应将 ScriptErrorsSuppressed 设置为 false，并在 HtmlWindow.Error 事件的处理程序中取消显示脚本错误。下面的代码演示如何在不取消显示其他对话框的情况下取消显示脚本错误。在此示例中，将 ScriptErrorsSuppressed 属性设置为 false 以确保显示对话框。HtmlWindow.Error 事件的处理程序取消显示该错误。只有在文档已完成加载时才能访问此事件，因此该处理程序被附加到 DocumentCompleted 事件处理程序中。// 仅隐藏脚本错误，其他错误照样提示 private void SuppressScriptErrorsOnly(WebBrowser browser) { // 确信 ScriptErrorsSuppressed 设为 false. browser.ScriptErrorsSuppressed = false; // 处理 DocumentCompleted 事件以访问 Document 对象. browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(browser_DocumentCompleted); private void browser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { ((WebBrowser)sender).Document.Window.Error += new HtmlElementErrorEventHandler(Window_Error); } private void Window_Error(object sender, HtmlElementErrorEventArgs e) { // 忽略该错误并抑制错误对话框 e.Handled = true; } }获取Post内容string postData = "value1=" + 1 + "&value2=" + 2 + "&value3=" + 3; System.Text.Encoding encoding = System.Text.Encoding.UTF8; byte[] bytes = encoding.GetBytes(postData); string url = "http://www.domain.com/addSomething"; webBrowser1.Navigate(url, string.Empty, bytes, "Content-Type: application/x-www-form-urlencoded");补充WebBrower修改使用的浏览器内核,只需在html文件的头部添加如下代码即可
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net; using System.Net.Sockets; using System.Text; using System.Threading; using System.Threading.Tasks; using System.Xml; namespace ClassLibrary { /// /// 文件传输服务器 /// public class FileTransferServer { /* 服务器接收文件Socket */ private static Socket ServerSocket; /* 文件根目录 */ private static string ServerRoot; /// /// 初始化服务 /// /// xml配置文件 public static void Init(string config) { /* 加载配置文件 */ XmlDocument xml = new XmlDocument(); //xml.Load(Path.Combine(Environment.CurrentDirectory, "config/tcp.xml")); xml.Load(config); XmlNode Config = xml.SelectSingleNode("Config/FileServer"); IPAddress ListenIP = IPAddress.Parse(Config.Attributes["ListenIP"].Value); int ListenPort = Convert.ToInt32(Config.Attributes["ListenPort"].Value); ServerRoot = Environment.CurrentDirectory; // 默认当前目录 /* 开始监听 */ ServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); ServerSocket.Bind(new IPEndPoint(ListenIP, ListenPort)); //绑定IP地址：端口 ServerSocket.Listen(10); //设定最多10个排队连接请求 Thread t = new Thread(ListenClientConnect); t.Start(); } private static void ListenClientConnect() { while (true) { if (ServerSocket != null) { try { Socket client = ServerSocket.Accept(); Thread th = new Thread(Handle); th.Start(client); } catch { break; } } } } private static void Handle(Object clientSocket) { Socket client = clientSocket as Socket; // 获取头部协议 string header = ReceiveHeader(client); Console.WriteLine(string.Format("{0} 请求 {1}",client.RemoteEndPoint.ToString() ,header)); // TODO 添加其它协议 switch (header.Substring(0, 3)) { case "PUT": string filename = header.Substring(4); PutFile(client, filename); break; case "GET": string fullPath = header.Substring(4); GetFile(client, fullPath); break; default: Console.WriteLine("We can not suppose this"); client.Close(); break; } } /// /// 接收远程文件 /// /// /// public static void PutFile(Socket client, string filename) { /* 创建一个新文件 */ string extension = Path.GetExtension(filename).Substring(1); string fullPath = Path.Combine(ServerRoot, extension, DateTime.Now.ToString("yyyyMMddHHmmss-ffff") + "." + extension); if (!Directory.Exists(Path.GetDirectoryName(fullPath))) { Directory.CreateDirectory(Path.GetDirectoryName(fullPath)); } FileStream fileStream = new FileStream(fullPath, FileMode.Create, FileAccess.Write); /* 循环接收 */ byte[] recvBuffer = new byte[1024]; while (true) { int length = client.Receive(recvBuffer, 0, recvBuffer.Length, SocketFlags.None); if (length == 0) { recvBuffer = null; break; } fileStream.Write(recvBuffer, 0, length);//将接收到的数据包写入到文件流对象 } client.Shutdown(SocketShutdown.Receive); fileStream.Close(); //发送文件名到服务端 byte[] sendBuffer = System.Text.Encoding.Unicode.GetBytes(fullPath.Replace(ServerRoot, "").Substring(1)); client.Send(sendBuffer, 0, sendBuffer.Length, SocketFlags.None); client.Shutdown(SocketShutdown.Send); client.Close(); } public static void GetFile(Socket client, string fullPath) { client.Shutdown(SocketShutdown.Receive); /* 文件不存在 */ string path = Path.Combine(ServerRoot, fullPath); if (!File.Exists(path)) { client.Close(); return; } FileStream fileStream = File.OpenRead(path); // 文件流 /* 开始循环发送数据包 */ byte[] sendBuffer = new byte[1024]; //数据包 while (true) { int length = fileStream.Read(sendBuffer, 0, sendBuffer.Length); if (length == 0) { break; } client.Send(sendBuffer, 0, length, SocketFlags.None); } client.Shutdown(SocketShutdown.Send); client.Close(); fileStream.Close(); //关闭文件流 } /// /// 获取头部协议 /// /// /// <returns></returns> private static string ReceiveHeader(Socket socket) { byte[] recvBuffer = new byte[256]; socket.Receive(recvBuffer, 0, recvBuffer.Length, SocketFlags.None); string header = System.Text.Encoding.Unicode.GetString(recvBuffer).Trim('\0'); return header; } /// /// 退出 /// public static void Exit() { ServerSocket.Shutdown(SocketShutdown.Both); ServerSocket.Close(); ServerSocket = null; } } /// /// 文件传输客户端 /// public class FileTransferClient { private static string IP = "127.0.0.1"; private static int Port = 6854; /// /// 初始化服务器连接配置 /// /// xml配置文件 public static void Init(string config) { /* 加载配置文件 */ XmlDocument xml = new XmlDocument(); //xml.Load(Path.Combine(Environment.CurrentDirectory, "config/tcp.xml")); xml.Load(config); XmlNode Config = xml.SelectSingleNode("Config/FileServer"); IP = Config.Attributes["ListenIP"].Value; Port = Convert.ToInt32(Config.Attributes["ListenPort"].Value); } /// /// 发送文件至服务器 /// /// 即将发送的本地文件 /// <returns>远程文件路径（相对于文件服务器根目录）</returns> public static string SendFile(string fullPath) { // 连接服务器 Socket client = ConnectServer(IP, Port); // 发送头部协议 string header = "PUT:" + Path.GetFileName(fullPath); SendHeader(client, header); FileStream fileStream = File.OpenRead(fullPath); // 文件流 /* 开始循环发送数据包 */ byte[] sendBuffer = new byte[1024]; //数据包 while (true) { int length = fileStream.Read(sendBuffer, 0, sendBuffer.Length); if (length == 0) { break; } client.Send(sendBuffer, 0, length, SocketFlags.None); } client.Shutdown(SocketShutdown.Send); fileStream.Close(); //关闭文件流 /* 获取服务器存储的文件名 */ string filename = string.Empty; byte[] recvBuffer = new byte[1024]; int len = client.Receive(recvBuffer, 0, recvBuffer.Length, SocketFlags.None); if (len != 0) { filename = System.Text.Encoding.Unicode.GetString(recvBuffer.Take(len).ToArray()); } Console.WriteLine(string.Format("完成上传成功，服务器返回新文件：{0}", filename)); client.Shutdown(SocketShutdown.Receive); client.Close(); return filename; } /// /// 从服务器获取文件 /// /// 远程文件路径（相对于文件服务器根目录） /// /// 保存的本地文件 public static void GetFile(string remoteFile, string localFile) { // 连接服务器 Socket client = ConnectServer(IP, Port); // 发送头部协议 string header = "GET:" + remoteFile; SendHeader(client, header); client.Shutdown(SocketShutdown.Send); //创建一个新文件 bool recv = false; // 是否接收到文件数据 // TODO: 用特殊的位标志标识文件接收情况 FileStream fileStream = new FileStream(localFile, FileMode.Create, FileAccess.Write); byte[] recvBuffer = new byte[1024]; while (true) { int length = client.Receive(recvBuffer, 0, recvBuffer.Length, SocketFlags.None); if (length == 0) { recvBuffer = null; break; } fileStream.Write(recvBuffer, 0, length);//将接收到的数据包写入到文件流对象 recv = true; } client.Shutdown(SocketShutdown.Receive); client.Close(); fileStream.Close(); /* 未接收到任何文件数据 */ if (recv == false) { File.Delete(localFile); return; } Console.WriteLine("文件获取成功，保存到本地："+localFile); } /// /// 连接服务器 /// /// <returns></returns> private static Socket ConnectServer(string IP, int Port) { Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //创建套接字 try { IPEndPoint ep = new IPEndPoint(IPAddress.Parse(IP), Port); //指向远程服务端节点 client.Connect(ep); } catch { Console.WriteLine("连接文件服务器失败"); } return client; } /// /// 发送头部协议 /// /// /// private static void SendHeader(Socket socket, string header) { byte[] sendBuffer = new byte[256]; System.Text.Encoding.Unicode.GetBytes(header).CopyTo(sendBuffer, 0); socket.Send(sendBuffer, 0, sendBuffer.Length, SocketFlags.None); } } }服务端使用Console.WriteLine("===================== 开启文件服务器 ====================="); FileTransferServer.Init(Path.Combine(Environment.CurrentDirectory, "config/tcp.xml"));
ExeEmbedForm类/// /// 将外部exe嵌入至winform中 /// public class ExeEmbedForm { EventHandler appIdleEvent = null; Control ParentCon = null; string strGUID = ""; public ExeEmbedForm(Control C, string Titlestr) { appIdleEvent = new EventHandler(Application_Idle); ParentCon = C; strGUID = Titlestr; } /// /// 将属性AppFilename指向的应用程序打开并嵌入此容器 /// public IntPtr Start(string FileNameStr) { if (m_AppProcess != null) { Stop(); } try { ProcessStartInfo info = new ProcessStartInfo(FileNameStr); info.UseShellExecute = true; info.WindowStyle = ProcessWindowStyle.Minimized; m_AppProcess = System.Diagnostics.Process.Start(info); m_AppProcess.WaitForInputIdle(); Application.Idle += appIdleEvent; } catch { if (m_AppProcess != null) { if (!m_AppProcess.HasExited) m_AppProcess.Kill(); m_AppProcess = null; } } return m_AppProcess.Handle; } /// /// 确保应用程序嵌入此容器 /// /// /// void Application_Idle(object sender, EventArgs e) { if (this.m_AppProcess == null || this.m_AppProcess.HasExited) { this.m_AppProcess = null; Application.Idle -= appIdleEvent; return; } while (m_AppProcess.MainWindowHandle == IntPtr.Zero) { Thread.Sleep(100); m_AppProcess.Refresh(); } Application.Idle -= appIdleEvent; EmbedProcess(m_AppProcess, ParentCon); } /// /// 应用程序结束运行时要清除这里的标识 /// /// /// void m_AppProcess_Exited(object sender, EventArgs e) { m_AppProcess = null; } /// /// 将属性AppFilename指向的应用程序关闭 /// public void Stop() { if (m_AppProcess != null)// && m_AppProcess.MainWindowHandle != IntPtr.Zero) { try { if (!m_AppProcess.HasExited) m_AppProcess.Kill(); } catch (Exception) { } m_AppProcess = null; } } #region 属性 /// /// application process /// Process m_AppProcess = null; /// /// 标识内嵌程序是否已经启动 /// public bool IsStarted { get { return (this.m_AppProcess != null); } } #endregion 属性 #region Win32 API [DllImport("user32.dll", EntryPoint = "GetWindowThreadProcessId", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)] private static extern long GetWindowThreadProcessId(long hWnd, long lpdwProcessId); [DllImport("user32.dll", SetLastError = true)] private static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll", SetLastError = true)] private static extern long SetParent(IntPtr hWndChild, IntPtr hWndNewParent); [DllImport("user32.dll", EntryPoint = "GetWindowLongA", SetLastError = true)] private static extern long GetWindowLong(IntPtr hwnd, int nIndex); public static IntPtr SetWindowLong(HandleRef hWnd, int nIndex, int dwNewLong) { if (IntPtr.Size == 4) { return SetWindowLongPtr32(hWnd, nIndex, dwNewLong); } return SetWindowLongPtr64(hWnd, nIndex, dwNewLong); } [DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)] public static extern IntPtr SetWindowLongPtr32(HandleRef hWnd, int nIndex, int dwNewLong); [DllImport("user32.dll", EntryPoint = "SetWindowLongPtr", CharSet = CharSet.Auto)] public static extern IntPtr SetWindowLongPtr64(HandleRef hWnd, int nIndex, int dwNewLong); [DllImport("user32.dll", SetLastError = true)] private static extern long SetWindowPos(IntPtr hwnd, long hWndInsertAfter, long x, long y, long cx, long cy, long wFlags); [DllImport("user32.dll", SetLastError = true)] private static extern bool MoveWindow(IntPtr hwnd, int x, int y, int cx, int cy, bool repaint); [DllImport("user32.dll", EntryPoint = "PostMessageA", SetLastError = true)] private static extern bool PostMessage(IntPtr hwnd, uint Msg, uint wParam, uint lParam); [DllImport("user32.dll", SetLastError = true)] private static extern IntPtr GetParent(IntPtr hwnd); [DllImport("user32.dll", EntryPoint = "ShowWindow", SetLastError = true)] static extern bool ShowWindow(IntPtr hWnd, int nCmdShow); private const int SWP_NOOWNERZORDER = 0x200; private const int SWP_NOREDRAW = 0x8; private const int SWP_NOZORDER = 0x4; private const int SWP_SHOWWINDOW = 0x0040; private const int WS_EX_MDICHILD = 0x40; private const int SWP_FRAMECHANGED = 0x20; private const int SWP_NOACTIVATE = 0x10; private const int SWP_ASYNCWINDOWPOS = 0x4000; private const int SWP_NOMOVE = 0x2; private const int SWP_NOSIZE = 0x1; private const int GWL_STYLE = (-16); private const int WS_VISIBLE = 0x10000000; private const int WM_CLOSE = 0x10; private const int WS_CHILD = 0x40000000; private const int SW_HIDE = 0; //{隐藏, 并且任务栏也没有最小化图标} private const int SW_SHOWNORMAL = 1; //{用最近的大小和位置显示, 激活} private const int SW_NORMAL = 1; //{同 SW_SHOWNORMAL} private const int SW_SHOWMINIMIZED = 2; //{最小化, 激活} private const int SW_SHOWMAXIMIZED = 3; //{最大化, 激活} private const int SW_MAXIMIZE = 3; //{同 SW_SHOWMAXIMIZED} private const int SW_SHOWNOACTIVATE = 4; //{用最近的大小和位置显示, 不激活} private const int SW_SHOW = 5; //{同 SW_SHOWNORMAL} private const int SW_MINIMIZE = 6; //{最小化, 不激活} private const int SW_SHOWMINNOACTIVE = 7; //{同 SW_MINIMIZE} private const int SW_SHOWNA = 8; //{同 SW_SHOWNOACTIVATE} private const int SW_RESTORE = 9; //{同 SW_SHOWNORMAL} private const int SW_SHOWDEFAULT = 10; //{同 SW_SHOWNORMAL} private const int SW_MAX = 10; //{同 SW_SHOWNORMAL} #endregion Win32 API /// /// 将指定的程序嵌入指定的控件 /// private void EmbedProcess(Process app, Control control) { // Get the main handle if (app == null || app.MainWindowHandle == IntPtr.Zero || control == null) return; try { // Put it into this form SetParent(app.MainWindowHandle, control.Handle); } catch (Exception) { } try { // Remove border and whatnot SetWindowLong(new HandleRef(this, app.MainWindowHandle), GWL_STYLE, WS_VISIBLE); SendMessage(app.MainWindowHandle, WM_SETTEXT, IntPtr.Zero, strGUID); } catch (Exception) { } try { // Move the window to overlay it on this window MoveWindow(app.MainWindowHandle, 0, 0, control.Width, control.Height, true); } catch (Exception) { } } [DllImport("User32.dll", EntryPoint = "SendMessage")] private static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam); const int WM_SETTEXT = 0x000C; }使用ExeEmbedForm exeEmbedForm = new ExeEmbedForm(this.panel, ""); exeEmbedForm.Start("Client.exe");注意如果调用的exe需要的资源文件路径与exe相关,可以设置WorkingDirectoryinfo.WorkingDirectory = workingDirectory;
启动进程System.Diagnostics.Process.Start("Client.exe");查看进程Process[] processes = Process.GetProcessesByName(Path.GetFileNameWithoutExtension("Client.exe")); foreach (Process process in processes) { // 输出每个进程的进程号、名称、占用的物理内存、开始的时间和文件名 Console.WriteLine(process.ProcessName); Console.WriteLine(string.Format("{0} KB",process.PrivateMemorySize64/1024.0f)); Console.WriteLine(string.Format("{0}",process.StartTime),); Console.WriteLine(process.MainModule.FileName); }停止进程Process[] processes = Process.GetProcessesByName(Path.GetFileNameWithoutExtension("Client.exe")); foreach (Process process in processes) { process.Kill(); }
设置ShowInTaskbar属性值this.ShowInTaskbar =false
WinForm窗体及其控件自适应各种屏幕分辨率
背景我们自己编写程序的界面，会遇到各种屏幕分辨率，只有自适应才能显的美观。实际上，做到这点也很简单，就是首先记录窗体和它上面控件的初始位置和大小，当窗体改变比例时，其控件的位置和大小也按此比例变化即可。（因为窗体上控件的位置和大小是相对于自己所在的窗体的。）使用方法声明自适应辅助类实例为窗体添加Load事件，并在其方法Form\_Load中，调用自适应辅助类方法，记录窗体和其控件初始位置和大小为窗体添加SizeChanged事件，并在其方法Form\_SizeChanged中，调用自适应辅助类的自适应方法，完成自适应完整代码自适应窗体public partial class Form1 : Form { // 声明自适应辅助类实例 AutoSizeFormHelper asf = new AutoSizeFormHelper(); public Form1() { InitializeComponent(); } // 为窗体添加Load事件，并在其方法Form1_Load中，调用自适应辅助类方法，记录窗体和其控件的初始位置和大小 private void Form1_Load(object sender, EventArgs e) { asf.ControlInitializeSize(this); } // 为窗体添加SizeChanged事件，并在其方法Form1_SizeChanged中，调用自适应辅助类的自适应方法，完成自适应 private void Form1_SizeChanged(object sender, EventArgs e) { asf.ControlAutoSize(this); } }自适应辅助类/// /// 自适应窗体辅助类 /// public class AutoSizeFormHelper { // 窗体和其控件的初始位置和大小。 public class ControlRect { public int Left; public int Top; public int Width; public int Height; public ControlRect(int l, int t, int w, int h) { Left = l; Top = t; Width = w; Height = h; } } // 当前控件的位置和大小 public ConditionalWeakTable<Control, ControlRect> oldControls = new ConditionalWeakTable<Control, ControlRect>(); // 当前的窗体位置和大小 public ControlRect formRect; // 记录窗体和其控件的初始位置和大小 public void ControlInitializeSize(Form mForm) { // 窗体自身位置 this.formRect = new ControlRect(mForm.Left, mForm.Top, mForm.Width, mForm.Height); foreach (Control c in mForm.Controls) { ControlRect controlRect = new ControlRect(c.Left, c.Top, c.Width, c.Height); oldControls.Add(c, controlRect); } //记录完控件的初始位置和大小后，最大化 mForm.WindowState = System.Windows.Forms.FormWindowState.Maximized; } // 控件自适应大小, public void ControlAutoSize(Form mForm) { // 缩放比例 float wScale = (float)mForm.Width / (float)formRect.Width; float hScale = (float)mForm.Height / (float)formRect.Height; ControlRect data; foreach (Control c in mForm.Controls) { if (oldControls.TryGetValue(c, out data)) { c.Left = (int)((data.Left) * wScale);//新旧控件之间的线性比例。控件位置只相对于窗体，所以只需成比例 c.Top = (int)((data.Top) * hScale); c.Width = (int)(data.Width * wScale); c.Height = (int)(data.Height * hScale); } } } }
通常情况下，直接调用WebBrowser控件的时候默认是IE7内核，实在是不美观。using Microsoft.Win32; using System; using System.ComponentModel; namespace ClassLibrary { /// /// 设置Webbrowser控件所用IE内核版本 /// public class WebBrowserHelper { /// 修改注册表信息来兼容当前程序 /// /// public static void SetWebBrowserFeatures(int ieVersion) { // Win8及以上，默认浏览器IE10及以上 OperatingSystem os = Environment.OSVersion; if(os.Version.Major > 6 || os.Version.Major == 6 && os.Version.Minor > 1) { return; } // don't change the registry if running in-proc inside Visual Studio if (LicenseManager.UsageMode != LicenseUsageMode.Runtime) return; //获取程序及名称 string appName = System.IO.Path.GetFileName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName); //得到浏览器的模式的值 UInt32 ieMode = GeoEmulationModee(ieVersion); string featureControlRegKey = @"HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\"; //设置浏览器对应用程序（appName）以什么模式（ieMode）运行 Registry.SetValue(featureControlRegKey + "FEATURE_BROWSER_EMULATION", appName, ieMode, RegistryValueKind.DWord); // enable the features which are "On" for the full Internet Explorer browser Registry.SetValue(featureControlRegKey + "FEATURE_ENABLE_CLIPCHILDREN_OPTIMIZATION", appName, 1, RegistryValueKind.DWord); //Registry.SetValue(featureControlRegKey + "FEATURE_AJAX_CONNECTIONEVENTS", appName, 1, RegistryValueKind.DWord); //Registry.SetValue(featureControlRegKey + "FEATURE_GPU_RENDERING", appName, 1, RegistryValueKind.DWord); //Registry.SetValue(featureControlRegKey + "FEATURE_WEBOC_DOCUMENT_ZOOM", appName, 1, RegistryValueKind.DWord); //Registry.SetValue(featureControlRegKey + "FEATURE_NINPUT_LEGACYMODE", appName, 0, RegistryValueKind.DWord); } /// /// 获取浏览器的版本 /// /// <returns></returns> public static int GetBrowserVersion() { int browserVersion = 0; using (RegistryKey ieKey = Registry.LocalMachine.OpenSubKey( @"SOFTWARE\Microsoft\Internet Explorer", RegistryKeyPermissionCheck.ReadSubTree, System.Security.AccessControl.RegistryRights.QueryValues)) { object version = ieKey.GetValue("svcVersion"); if (version == null) { version = ieKey.GetValue("Version"); if (version == null) throw new ApplicationException("Microsoft Internet Explorer is required!"); } int.TryParse(version.ToString().Split('.')[0], out browserVersion); } //如果小于7 if (browserVersion < 7) { throw new ApplicationException("不支持的浏览器版本!"); } return browserVersion; } /// /// 通过版本得到浏览器模式的值 /// /// /// <returns></returns> static UInt32 GeoEmulationModee(int browserVersion) { UInt32 mode = 9000; // Internet Explorer 11. Webpages containing standards-based !DOCTYPE directives are displayed in IE11 Standards mode. switch (browserVersion) { case 7: mode = 7000; // Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode. break; case 8: mode = 8000; // Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode. break; case 9: mode = 9000; // Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode. break; case 10: mode = 10000; // Internet Explorer 10. break; case 11: mode = 11000; // Internet Explorer 11 break; } return mode; } } }在需要的地方调用WebBrowserHelper.SetWebBrowserFeatures(11);
using System; using System.Collections.Generic; using System.Diagnostics; using System.Runtime.Serialization; using System.Security.Cryptography; using System.Text; // // Copyright (c) 2006 Damien Miller <djm@mindrot.org> // Copyright (c) 2013 Ryan D. Emerle // // Permission to use, copy, modify, and distribute this software for any // purpose with or without fee is hereby granted, provided that the above // copyright notice and this permission notice appear in all copies. // // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. // namespace: ClassLibrary namespace ClassLibrary { /// BCrypt implementation. /// <remarks> /// /// BCrypt implements OpenBSD-style Blowfish password hashing using the scheme described in /// "A Future- /// Adaptable Password Scheme" by Niels Provos and David Mazieres. /// /// /// This password hashing system tries to thwart off-line password cracking using a /// computationally-intensive hashing algorithm, based on Bruce Schneier's Blowfish cipher. /// The work factor of the algorithm is parameterised, so it can be increased as computers /// get faster. /// /// /// Usage is really simple. To hash a password for the first time, call the <see /// cref="HashPassword(string)"/> method with a random salt, like this: /// /// string pw_hash = BCrypt.HashPassword(plain_password); /// /// To check whether a plaintext password matches one that has been hashed previously, /// use the <see cref="Verify"/> method: /// /// /// if (BCrypt.Verify(candidate_password, stored_hash)) /// Console.WriteLine("It matches"); /// else /// Console.WriteLine("It does not match"); /// /// /// The <see cref="GenerateSalt()"/> method takes an optional parameter (workFactor) that /// determines the computational complexity of the hashing: /// /// /// string strong_salt = BCrypt.GenerateSalt(10); /// string stronger_salt = BCrypt.GenerateSalt(12); /// /// /// The amount of work increases exponentially (2^workFactor), so each increment is twice /// as much work. The default workFactor is 10, and the valid range is 4 to 31. /// /// </remarks> public sealed class BCrypt { // BCrypt parameters private const int GENSALT_DEFAULT_LOG2_ROUNDS = 10; private const int BCRYPT_SALT_LEN = 16; // Blowfish parameters private const int BLOWFISH_NUM_ROUNDS = 16; // Initial contents of key schedule private static readonly uint[] _POrig = { 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b }; private static readonly uint[] _SOrig = { 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239, 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463, 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c, 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915, 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a, 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af, 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a, 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73, 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc, 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c, 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc, 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c, 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633, 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0, 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28, 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb, 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048, 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e, 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060, 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6 }; // bcrypt IV: "OrpheanBeholderScryDoubt" private static readonly uint[] _BfCryptCiphertext = { 0x4f727068, 0x65616e42, 0x65686f6c, 0x64657253, 0x63727944, 0x6f756274 }; // Table for Base64 encoding private static readonly char[] _Base64Code = { '.', '/', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' }; // Table for Base64 decoding private static readonly int[] _Index64 = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, -1, -1, -1, -1, -1, -1, -1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, -1, -1, -1, -1, -1, -1, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, -1, -1, -1, -1, -1 }; // Expanded Blowfish key private uint[] _P; private uint[] _S; /// /// Hash a string using the OpenBSD bcrypt scheme and a salt generated by <see /// cref="BCrypt.GenerateSalt()"/>. /// /// <remarks>Just an alias for HashPassword.</remarks> /// The string to hash. /// <returns>The hashed string.</returns> public static string HashString(string source) { return HashPassword(source); } /// /// Hash a string using the OpenBSD bcrypt scheme and a salt generated by <see /// cref="BCrypt.GenerateSalt()"/>. /// /// <remarks>Just an alias for HashPassword.</remarks> /// The string to hash. /// The log2 of the number of rounds of hashing to apply - the work /// factor therefore increases as 2^workFactor. /// <returns>The hashed string.</returns> public static string HashString(string source, int workFactor) { return HashPassword(source, GenerateSalt(workFactor)); } /// /// Hash a password using the OpenBSD bcrypt scheme and a salt generated by <see /// cref="BCrypt.GenerateSalt()"/>. /// /// The password to hash. /// <returns>The hashed password.</returns> public static string HashPassword(string input) { return HashPassword(input, GenerateSalt()); } /// /// Hash a password using the OpenBSD bcrypt scheme and a salt generated by <see /// cref="BCrypt.GenerateSalt(int)"/> using the given <paramref name="workFactor"/>. /// /// The password to hash. /// The log2 of the number of rounds of hashing to apply - the work /// factor therefore increases as 2^workFactor. /// <returns>The hashed password.</returns> public static string HashPassword(string input, int workFactor) { return HashPassword(input, GenerateSalt(workFactor)); } /// Hash a password using the OpenBSD bcrypt scheme. /// <exception cref="ArgumentException">Thrown when one or more arguments have unsupported or /// illegal values.</exception> /// The password to hash. /// the salt to hash with (perhaps generated using BCrypt.gensalt). /// <returns>The hashed password</returns> public static string HashPassword(string input, string salt) { if (input == null) throw new ArgumentNullException("input"); if (string.IsNullOrEmpty(salt)) throw new ArgumentException("Invalid salt", "salt"); // Determinthe starting offset and validate the salt int startingOffset; char minor = (char)0; if (salt[0] != '$' || salt[1] != '2') throw new SaltParseException("Invalid salt version"); if (salt[2] == '$') startingOffset = 3; else { minor = salt[2]; if (minor != 'a' || salt[3] != '$') throw new SaltParseException("Invalid salt revision"); startingOffset = 4; } // Extract number of rounds if (salt[startingOffset + 2] > '$') throw new SaltParseException("Missing salt rounds"); // Extract details from salt int logRounds = Convert.ToInt32(salt.Substring(startingOffset, 2)); string extractedSalt = salt.Substring(startingOffset + 3, 22); byte[] inputBytes = Encoding.UTF8.GetBytes((input + (minor >= 'a' ? "\0" : ""))); byte[] saltBytes = DecodeBase64(extractedSalt, BCRYPT_SALT_LEN); BCrypt bCrypt = new BCrypt(); byte[] hashed = bCrypt.CryptRaw(inputBytes, saltBytes, logRounds); // Generate result string StringBuilder result = new StringBuilder(); result.Append("$2"); if (minor >= 'a') result.Append(minor); result.AppendFormat("${0:00}$", logRounds); result.Append(EncodeBase64(saltBytes, saltBytes.Length)); result.Append(EncodeBase64(hashed, (_BfCryptCiphertext.Length * 4) - 1)); return result.ToString(); } /// /// Generate a salt for use with the <see cref="BCrypt.HashPassword(string,string)"/> method. /// /// The log2 of the number of rounds of hashing to apply - the work /// factor therefore increases as 2**workFactor. /// <returns>A base64 encoded salt value.</returns> public static string GenerateSalt(int workFactor) { if (workFactor < 4 || workFactor > 31) throw new ArgumentOutOfRangeException("workFactor", workFactor, "The work factor must be between 4 and 31 (inclusive)"); byte[] rnd = new byte[BCRYPT_SALT_LEN]; RandomNumberGenerator rng = RandomNumberGenerator.Create(); rng.GetBytes(rnd); StringBuilder rs = new StringBuilder(); rs.AppendFormat("$2a${0:00}$", workFactor); rs.Append(EncodeBase64(rnd, rnd.Length)); return rs.ToString(); } /// /// Generate a salt for use with the <see cref="BCrypt.HashPassword(string,string)"/> method /// selecting a reasonable default for the number of hashing rounds to apply. /// /// <returns>A base64 encoded salt value.</returns> public static string GenerateSalt() { return GenerateSalt(GENSALT_DEFAULT_LOG2_ROUNDS); } /// /// Verifies that the hash of the given <paramref name="text"/> matches the provided /// <paramref name="hash"/> /// /// The text to verify. /// The previously-hashed password. /// <returns>true if the passwords match, false otherwise.</returns> public static bool Verify(string text, string hash) { return hash == HashPassword(text, hash); } /// /// Encode a byte array using bcrypt's slightly-modified base64 encoding scheme. Note that this /// is *not* compatible with the standard MIME-base64 encoding. /// /// <exception cref="ArgumentException">Thrown when one or more arguments have unsupported or /// illegal values.</exception> /// The byte array to encode. /// The number of bytes to encode. /// <returns>Base64-encoded string.</returns> private static string EncodeBase64(byte[] byteArray, int length) { if (length <= 0 || length > byteArray.Length) throw new ArgumentException("Invalid length", "length"); int off = 0; StringBuilder rs = new StringBuilder(); while (off < length) { int c1 = byteArray[off++] & 0xff; rs.Append(_Base64Code[(c1 >> 2) & 0x3f]); c1 = (c1 & 0x03) << 4; if (off >= length) { rs.Append(_Base64Code[c1 & 0x3f]); break; } int c2 = byteArray[off++] & 0xff; c1 |= (c2 >> 4) & 0x0f; rs.Append(_Base64Code[c1 & 0x3f]); c1 = (c2 & 0x0f) << 2; if (off >= length) { rs.Append(_Base64Code[c1 & 0x3f]); break; } c2 = byteArray[off++] & 0xff; c1 |= (c2 >> 6) & 0x03; rs.Append(_Base64Code[c1 & 0x3f]); rs.Append(_Base64Code[c2 & 0x3f]); } return rs.ToString(); } /// /// Decode a string encoded using bcrypt's base64 scheme to a byte array. Note that this is *not* /// compatible with the standard MIME-base64 encoding. /// /// <exception cref="ArgumentException">Thrown when one or more arguments have unsupported or /// illegal values.</exception> /// The string to decode. /// The maximum bytes to decode. /// <returns>The decoded byte array.</returns> private static byte[] DecodeBase64(string encodedstring, int maximumBytes) { int position = 0, sourceLength = encodedstring.Length, outputLength = 0; if (maximumBytes <= 0) throw new ArgumentException("Invalid maximum bytes value", "maximumBytes"); // TODO: update to use a List<byte> - it's only ever 16 bytes, so it's not a big deal StringBuilder rs = new StringBuilder(); while (position < sourceLength - 1 && outputLength < maximumBytes) { int c1 = Char64(encodedstring[position++]); int c2 = Char64(encodedstring[position++]); if (c1 == -1 || c2 == -1) break; rs.Append((char)((c1 << 2) | ((c2 & 0x30) >> 4))); if (++outputLength >= maximumBytes || position >= sourceLength) break; int c3 = Char64(encodedstring[position++]); if (c3 == -1) break; rs.Append((char)(((c2 & 0x0f) << 4) | ((c3 & 0x3c) >> 2))); if (++outputLength >= maximumBytes || position >= sourceLength) break; int c4 = Char64(encodedstring[position++]); rs.Append((char)(((c3 & 0x03) << 6) | c4)); ++outputLength; } byte[] ret = new byte[outputLength]; for (position = 0; position < outputLength; position++) ret[position] = (byte)rs[position]; return ret; } /// /// Look up the 3 bits base64-encoded by the specified character, range-checking against /// conversion table. /// /// The base64-encoded value. /// <returns>The decoded value of x.</returns> private static int Char64(char character) { if (character < 0 || character > _Index64.Length) return -1; return _Index64[character]; } /// Blowfish encipher a single 64-bit block encoded as two 32-bit halves. /// An array containing the two 32-bit half blocks. /// The position in the array of the blocks. private void Encipher(uint[] blockArray, int offset) { uint round, n, block = blockArray[offset], r = blockArray[offset + 1]; block ^= _P[0]; unchecked { for (round = 0; round <= BLOWFISH_NUM_ROUNDS - 2;) { // Feistel substitution on left word n = _S[(block >> 24) & 0xff]; n += _S[0x100 | ((block >> 16) & 0xff)]; n ^= _S[0x200 | ((block >> 8) & 0xff)]; n += _S[0x300 | (block & 0xff)]; r ^= n ^ _P[++round]; // Feistel substitution on right word n = _S[(r >> 24) & 0xff]; n += _S[0x100 | ((r >> 16) & 0xff)]; n ^= _S[0x200 | ((r >> 8) & 0xff)]; n += _S[0x300 | (r & 0xff)]; block ^= n ^ _P[++round]; } blockArray[offset] = r ^ _P[BLOWFISH_NUM_ROUNDS + 1]; blockArray[offset + 1] = block; } } /// Cycically extract a word of key material. /// The string to extract the data from. /// [in,out] The current offset. /// <returns>The next word of material from data.</returns> private static uint StreamToWord(byte[] data, ref int offset) { int i; uint word = 0; for (i = 0; i < 4; i++) { word = (word << 8) | (uint)(data[offset] & 0xff); offset = (offset + 1) % data.Length; } return word; } /// Initializes the Blowfish key schedule. private void InitializeKey() { _P = new uint[_POrig.Length]; _S = new uint[_SOrig.Length]; Array.Copy(_POrig, _P, _POrig.Length); Array.Copy(_SOrig, _S, _SOrig.Length); } /// Key the Blowfish cipher. /// The key byte array. private void Key(byte[] keyBytes) { int i; int koffp = 0; uint[] lr = { 0, 0 }; int plen = _P.Length, slen = _S.Length; for (i = 0; i < plen; i++) _P[i] = _P[i] ^ StreamToWord(keyBytes, ref koffp); for (i = 0; i < plen; i += 2) { Encipher(lr, 0); _P[i] = lr[0]; _P[i + 1] = lr[1]; } for (i = 0; i < slen; i += 2) { Encipher(lr, 0); _S[i] = lr[0]; _S[i + 1] = lr[1]; } } /// /// Perform the "enhanced key schedule" step described by Provos and Mazieres in "A Future- /// Adaptable Password Scheme" http://www.openbsd.org/papers/bcrypt-paper.ps. /// /// Salt byte array. /// Input byte array. private void EKSKey(byte[] saltBytes, byte[] inputBytes) { int i; int passwordOffset = 0, saltOffset = 0; uint[] lr = { 0, 0 }; int plen = _P.Length, slen = _S.Length; for (i = 0; i < plen; i++) _P[i] = _P[i] ^ StreamToWord(inputBytes, ref passwordOffset); for (i = 0; i < plen; i += 2) { lr[0] ^= StreamToWord(saltBytes, ref saltOffset); lr[1] ^= StreamToWord(saltBytes, ref saltOffset); Encipher(lr, 0); _P[i] = lr[0]; _P[i + 1] = lr[1]; } for (i = 0; i < slen; i += 2) { lr[0] ^= StreamToWord(saltBytes, ref saltOffset); lr[1] ^= StreamToWord(saltBytes, ref saltOffset); Encipher(lr, 0); _S[i] = lr[0]; _S[i + 1] = lr[1]; } } /// Perform the central hashing step in the bcrypt scheme. /// <exception cref="ArgumentException">Thrown when one or more arguments have unsupported or /// illegal values.</exception> /// The input byte array to hash. /// The salt byte array to hash with. /// The binary logarithm of the number of rounds of hashing to apply. /// <returns>A byte array containing the hashed result.</returns> private byte[] CryptRaw(byte[] inputBytes, byte[] saltBytes, int logRounds) { uint[] cdata = new uint[_BfCryptCiphertext.Length]; Array.Copy(_BfCryptCiphertext, cdata, _BfCryptCiphertext.Length); int clen = cdata.Length; if (logRounds < 4 || logRounds > 31) throw new ArgumentException("Bad number of rounds", "logRounds"); if (saltBytes.Length != BCRYPT_SALT_LEN) throw new ArgumentException("Bad salt Length", "saltBytes"); uint rounds = 1u << logRounds; Debug.Assert(rounds > 0, "Rounds must be > 0"); // We overflowed rounds at 31 - added safety check InitializeKey(); EKSKey(saltBytes, inputBytes); for (int i = 0; i < rounds; i++) { Key(inputBytes); Key(saltBytes); } for (int i = 0; i < 64; i++) { for (int j = 0; j < (clen >> 1); j++) Encipher(cdata, j << 1); } byte[] ret = new byte[clen * 4]; for (int i = 0, j = 0; i < clen; i++) { ret[j++] = (byte)((cdata[i] >> 24) & 0xff); ret[j++] = (byte)((cdata[i] >> 16) & 0xff); ret[j++] = (byte)((cdata[i] >> 8) & 0xff); ret[j++] = (byte)(cdata[i] & 0xff); } return ret; } } /// Exception for signalling parse errors. public class SaltParseException : ApplicationException { /// Default constructor. public SaltParseException() { } /// Initializes a new instance of <see cref="SaltParseException"/>. /// The message. public SaltParseException(string message) : base(message) { } /// Initializes a new instance of <see cref="SaltParseException"/>. /// The message. /// The inner exception. public SaltParseException(string message, Exception innerException) : base(message, innerException) { } /// Initializes a new instance of <see cref="SaltParseException"/>. /// The information. /// The context. protected SaltParseException(SerializationInfo info, StreamingContext context) : base(info, context) { } } }
TreeView本身不支持透明背景，重写WndProc以支持背景图片。using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms; using System.ComponentModel; using System.Runtime.InteropServices; namespace MyControl { /// /// Displays a hierarchical collection of labeled items, each represented by a System.Windows.Forms.TreeNode. /// [ //Use the same attibutes as TreeView DesignerAttribute("System.Windows.Forms.Design.TreeViewDesigner, System.Design, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"), DefaultPropertyAttribute("Nodes"), DefaultEventAttribute("AfterSelect") ] public class UTreeView : TreeView { Bitmap internalBitmap = null; Graphics internalGraphics = null; Image image = null; private void DisposeInternal() { if (internalGraphics != null) internalGraphics.Dispose(); if (internalBitmap != null) internalBitmap.Dispose(); } /// Releases resources. /// true = Both managed and unmanaged, false = Unmanaged only. protected override void Dispose(bool disposing) { if (disposing) DisposeInternal(); base.Dispose(disposing); } /// Occurs when window is resized. /// A System.EventArgs.Empty. /// <remarks>Recreates internal Graphics object. </remarks> protected override void OnResize(System.EventArgs e) { if (internalBitmap == null || internalBitmap.Width != Width || internalBitmap.Height != Height) { if (Width != 0 && Height != 0) { DisposeInternal(); internalBitmap = new Bitmap(Width, Height); internalGraphics = Graphics.FromImage(internalBitmap); } } } /// Occurs when a Windows message is dispatched. /// Message to process. /// <remarks>Overrides WM_PAINT, WM_ERASEBKGND.</remarks> public void setBackGround(Image bk = null) { if (bk != null) { image = bk; } else { Bitmap bm = new Bitmap(this.Parent.BackgroundImage, this.Parent.Width, this.Parent.Height); //绘制矩形，定义你需要截取的图像起始位置和宽高 Rectangle rs = new Rectangle(this.Location.X, this.Location.Y, this.Width, this.Height); //按矩形尺寸和起始位置截取bm的一部分 bm = bm.Clone(rs, System.Drawing.Imaging.PixelFormat.Undefined); image = bm; } } /// Occurs when a Windows message is dispatched. /// Message to process. /// <remarks>Overrides WM_PAINT, WM_ERASEBKGND.</remarks> protected override void WndProc(ref Message message) { const int WM_PAINT = 0x000F; const int WM_PRINTCLIENT = 0x0318; const int WM_ERASEBKGND = 0x0014; switch (message.Msg) { case WM_ERASEBKGND: return; case WM_PAINT: // The designer host does not call OnResize() if (internalGraphics == null) OnResize(EventArgs.Empty); //Set up Win32.RECT updateRect = new Win32.RECT(); if (Win32.GetUpdateRect(message.HWnd, ref updateRect, false) == 0) break; //Draw Internal Graphics IntPtr hdc = internalGraphics.GetHdc(); Message printClientMessage = Message.Create(Handle, WM_PRINTCLIENT, hdc, IntPtr.Zero); DefWndProc(ref printClientMessage); internalGraphics.ReleaseHdc(hdc); //Add the missing OnPaint() call OnPaint(new PaintEventArgs(internalGraphics, Rectangle.FromLTRB( updateRect.left, updateRect.top, updateRect.right, updateRect.bottom))); Win32.PAINTSTRUCT paintStruct = new Win32.PAINTSTRUCT(); //IntPtr screenHdc1 = Win32.BeginPaint(message.HWnd, ref paintStruct); IntPtr screenHdc = Win32.GetDC(message.HWnd); using (Graphics screenGraphics = Graphics.FromHdc(screenHdc)) { //Draw Screen Graphics Bitmap temp = new Bitmap(internalBitmap, internalBitmap.Size); temp.MakeTransparent(Color.White); internalGraphics.FillRectangle(Brushes.White, 0, 0, this.Bounds.Width, this.Bounds.Height); if (image != null) internalGraphics.DrawImage(image, 0, 0, image.Width, image.Height); internalGraphics.DrawImage(temp, 0, 0, temp.Width, temp.Height); screenGraphics.DrawImage(internalBitmap, 0, 0); } //Tear down int ret = Win32.ReleaseDC(message.HWnd, screenHdc); Win32.ValidateRect(message.HWnd, ref updateRect); //Win32.EndPaint( message.HWnd, ref paintStruct ); return; } base.WndProc(ref message); } /// Occurs when the control is redrawn. /// <remarks>Re enable browsing attributes for the Paint Event.</remarks> [ EditorBrowsableAttribute(EditorBrowsableState.Always), BrowsableAttribute(true) ] public new event PaintEventHandler Paint { add { base.Paint += value; } remove { base.Paint -= value; } } } /// /// Win32 PInvoke declarations /// internal class Win32 { [DllImport("User32.dll")] public static extern int GetUpdateRect(IntPtr hwnd, ref RECT rect, bool erase); [DllImport("User32.dll")] public static extern int ValidateRect(IntPtr hwnd, ref RECT rect); [DllImport("User32.dll", SetLastError = true)] public static extern bool GetWindowRect(IntPtr handle, ref RECT rect); [DllImport("User32.dll")] public static extern IntPtr BeginPaint(IntPtr hWnd, ref PAINTSTRUCT paintStruct); [DllImport("User32.dll")] public static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT paintStruct); [DllImport("User32.dll")] public static extern IntPtr GetDC(IntPtr hWnd); [DllImport("User32.dll")] public static extern int ReleaseDC(IntPtr hwnd, IntPtr hdc); [DllImport("User32.dll")] public static extern int SendMessage(IntPtr hwnd, uint uMsg, IntPtr wParam, IntPtr lParam); [StructLayout(LayoutKind.Sequential)] public struct RECT { public int left; public int top; public int right; public int bottom; } [StructLayout(LayoutKind.Sequential)] public struct PAINTSTRUCT { public IntPtr hdc; public int fErase; public RECT rcPaint; public int fRestore; public int fIncUpdate; public int Reserved1; public int Reserved2; public int Reserved3; public int Reserved4; public int Reserved5; public int Reserved6; public int Reserved7; public int Reserved8; } } }
我们在做winform应用的时候，大部分情况下都会碰到使用多线程控制界面上控件信息的问题。然而我们并不能用传统方法来做这个问题，下面我将详细的介绍。首先来看传统方法：public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { Thread thread = new Thread(ThreadFuntion); thread.IsBackground = true; thread.Start(); } private void ThreadFuntion() { while (true) { this.textBox1.Text = DateTime.Now.ToString(); Thread.Sleep(1000); } } }运行这段代码，我们会看到系统抛出一个异常：Cross-thread operation not valid:Control 'textBox1' accessed from a thread other than the thread it was created on .这是因为.net 2.0以后加强了安全机制，不允许在winform中直接跨线程访问控件的属性。那么怎么解决这个问题呢，下面提供几种方案。第一种方案，我们在Form1_Load()方法中加一句代码：private void Form1_Load(object sender, EventArgs e) { Control.CheckForIllegalCrossThreadCalls = false; Thread thread = new Thread(ThreadFuntion); thread.IsBackground = true; thread.Start(); }加入这句代码以后发现程序可以正常运行了。这句代码就是说在这个类中我们不检查跨线程的调用是否合法（如果没有加这句话运行也没有异常，那么说明系统以及默认的采用了不检查的方式）。然而，这种方法不可取。我们查看CheckForIllegalCrossThreadCalls 这个属性的定义，就会发现它是一个static的，也就是说无论我们在项目的什么地方修改了这个值，他就会在全局起作用。而且像这种跨线程访问是否存在异常，我们通常都会去检查。如果项目中其他人修改了这个属性，那么我们的方案就失败了，我们要采取另外的方案。下面来看第二种方案，就是使用delegate和invoke来从其他线程中控制控件信息。网上有很多人写了这种控制方式，然而我看了很多这种帖子，表明上看来是没有什么问题的，但是实际上并没有解决这个问题，首先来看网络上的那种不完善的方式：public partial class Form1 : Form { private delegate void FlushClient(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { Thread thread = new Thread(CrossThreadFlush); thread.IsBackground=true; thread.Start(); } private void CrossThreadFlush() { //将代理绑定到方法 FlushClient fc = new FlushClient(ThreadFuntion); this.BeginInvoke(fc);//调用代理 } private void ThreadFuntion() { while (true) { this.textBox1.Text = DateTime.Now.ToString(); Thread.Sleep(1000); } } }使用这种方式我们可以看到跨线程访问的异常没有了。但是新问题出现了，界面没有响应了。为什么会出现这个问题，我们只是让新开的线程无限循环刷新，理论上应该不会对主线程产生影响的。其实不然，这种方式其实相当于把这个新开的线程“注入”到了主控制线程中，它取得了主线程的控制。只要这个线程不返回，那么主线程将永远都无法响应。就算新开的线程中不使用无限循环，使可以返回了。这种方式的使用多线程也失去了它本来的意义。现在来让我们看看推荐的解决方案：using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Threading; namespace WindowsFormsApplication4 { public partial class Form1 : Form { private delegate void FlushClient(); //代理 Thread thread = null; int counter = 0; public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { this.listBox1.Items.Clear(); button1.Enabled = false; thread = new Thread(CrossThreadFlush); thread.IsBackground = true; thread.Start(); } private void button2_Click(object sender, EventArgs e) { thread.Suspend(); button1.Enabled = true; } private void CrossThreadFlush() { while (true) { //将sleep和无限循环放在等待异步的外面 Thread.Sleep(1000); ThreadFunction(); } } private void ThreadFunction() { if (this.listBox1.InvokeRequired)//等待异步 { FlushClient fc = new FlushClient(ThreadFunction); this.Invoke(fc); //通过代理调用刷新方法 } else { counter += 1; this.label1.Text = counter.ToString(); this.listBox1.Items.Add(System.DateTime.Now.ToString()); } } } }运行上述代码，我们可以看到问题已经被解决了，通过等待异步，我们就不会总是持有主线程的控制，这样就可以在不发生跨线程调用异常的情况下完成多线程对winform多线程控件的控制了。