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Code: Printing the Form (Visual C#)

Visual Studio .NET 2003

This example demonstrates printing a copy of the current form.


public static extern long BitBlt (IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);
private Bitmap memoryImage;
private void CaptureScreen()
   Graphics mygraphics = this.CreateGraphics();
   Size s = this.Size;
   memoryImage = new Bitmap(s.Width, s.Height, mygraphics);
   Graphics memoryGraphics = Graphics.FromImage(memoryImage);
   IntPtr dc1 = mygraphics.GetHdc();
   IntPtr dc2 = memoryGraphics.GetHdc();
   BitBlt(dc2, 0, 0, this.ClientRectangle.Width, this.ClientRectangle.Height, dc1, 0, 0, 13369376);
private void printDocument1_PrintPage(System.Object sender, System.Drawing.Printing.PrintPageEventArgs e)
   e.Graphics.DrawImage(memoryImage, 0, 0);
private void printButton_Click(System.Object sender, System.EventArgs e)

Compiling the Code

This example requires:

  • A PrintDocument component named printDocument1 with a PrintPage event handler.
  • A Button named printButton with a Click event handler.

The example code replaces the existing event handlers. The form is printed when printButton is clicked.

Robust Programming

The following conditions may cause an exception:

  • You do not have permission to access the printer.
  • You do not have permission to use unmanaged code.
  • There is no printer installed.


In order to run this example, you must have permission to execute unmanaged code and to access the printer.

See Also

Graphics Programming Example Topics | Printing with the PrintDocument Component | Rendering Images with GDI+ | Printing Graphics in Windows Forms | PrintDocument Class