[DllImport("gdi32.dll")]    
private  static  extern  bool  BitBlt(    
IntPtr  hdcDest,  //  handle  to  destination  DC    
int  nXDest,  //  x-coord  of  destination  upper-left  corner    
int  nYDest,  //  y-coord  of  destination  upper-left  corner    
int  nWidth,  //  width  of  destination  rectangle    
int  nHeight,  //  height  of  destination  rectangle    
IntPtr  hdcSrc,  //  handle  to  source  DC    
int  nXSrc,  //  x-coordinate  of  source  upper-left  corner    
int  nYSrc,  //  y-coordinate  of  source  upper-left  corner    
System.Int32  dwRop  //  raster  operation  code    
);    
 
private  const  Int32  SRCCOPY  =  0xCC0020;    
 
private  Bitmap  memImage;    
 
private  void  PrepareImage()    
{    
Graphics  graphic  =  this.CreateGraphics();    
Size  s  =  this.Size;    
memImage  =  new  Bitmap(s.Width,  s.Height,  graphic);    
Graphics  memGraphic  =  Graphics.FromImage(memImage);    
IntPtr  dc1  =  graphic.GetHdc();    
IntPtr  dc2  =  memGraphic.GetHdc();    
BitBlt(dc2,  0,  0,  this.ClientRectangle.Width,    
this.ClientRectangle.Height,dc1,  0,  0,  SRCCOPY);    
graphic.ReleaseHdc(dc1);    
memGraphic.ReleaseHdc(dc2);    
}    
 
private  void  button1_Click(object  sender,  System.EventArgs  e)    
{    
PrepareImage();    
printDocument1.Print();    
}    
 
private  void  printDocument1_PrintPage(object  sender,    
System.Drawing.Printing.PrintPageEventArgs  e)    
{    
e.Graphics.DrawImage(memImage,0,0);    
}