Ref: http://dan.zzhc.org/post/3617137304/capture-window-with-c-sharp

/* 引入 Win32 API 中的 User32.DLL
 * 需要加上 using System.Runtime.InteropServices;
 */
[DllImport("user32.dll")]
public static extern Boolean GetWindowRect(IntPtr hWnd, ref Rectangle bounds);

public void CaptureWindow () {
  /* 取得目標視窗的 Handle
   * 需要加上 using System.Diagnostics;
   */
  Process[] process = Process.GetProcessesByName("notepad");

  /* 取得該視窗的大小與位置 */
  Rectangle bounds;
  GetWindowRect(process[0].MainWindowHandle, ref bounds);

  /* 抓取截圖 */
  Bitmap screenshot = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
  Graphics gfx = Graphics.FromImage(screenshot);
  gfx.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy);

  /* 利用 PictureBox 顯示出來 */
  imageView.Image = (Image) screenshot;
  imageView.Update();
}

http://www.techotopia.com/index.php/C_Sharp_Essentials

http://msdn2.microsoft.com/zh-tw/library/ms229675(VS.80).aspx

http://blog.roodo.com/chhuang/archives/3605951.html

http://msdn.microsoft.com/library/CHT/csref/html/vcoriCSharpTutorials.asp

http://aaronmind.blogspot.com/2009/01/clow-level-keyboard-hook.html

http://blog.miniasp.com/post/2009/02/Add-Installer-for-Windows-Service-and-Setup-Windows-Firewall-rule.aspx

http://blog.miniasp.com/post/2009/02/CSharp-40-New-Features-Dynamic-Lookup-and-Named-and-Optional-Arguments.aspx

http://blog.miniasp.com/post/2009/03/Multi-Threading-in-CSharp-Learning-Resources.aspx

http://dan.zzhc.org/post/3617137304/capture-window-with-c-sharp

/* 引入 Win32 API 中的 User32.DLL
 * 需要加上 using System.Runtime.InteropServices;
 */
[DllImport("user32.dll")]
public static extern Boolean GetWindowRect(IntPtr hWnd, ref Rectangle bounds);

public void CaptureWindow () {
  /* 取得目標視窗的 Handle
   * 需要加上 using System.Diagnostics;
   */
  Process[] process = Process.GetProcessesByName("notepad");

  /* 取得該視窗的大小與位置 */
  Rectangle bounds;
  GetWindowRect(process[0].MainWindowHandle, ref bounds);

  /* 抓取截圖 */
  Bitmap screenshot = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
  Graphics gfx = Graphics.FromImage(screenshot);
  gfx.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy);

  /* 利用 PictureBox 顯示出來 */
  imageView.Image = (Image) screenshot;
  imageView.Update();
}

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