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Capture screenshot of active window in C#

There are several ways to capture screenshot in C#"
1) Using ScreenCapture object
2) Using CopyFromScreen() method

Using ScreenCapture object

ScreenCapture sc = new ScreenCapture();

Image img = sc.CaptureScreen();

this.imageDisplay.Image = img;


Using CopyFromScreen() method

  Bitmap bm = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
  Graphics g = Graphics.FromImage(bm);
  g.CopyFromScreen(0, 0, 0, 0, bm.Size);


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