C# 打印winform 界面

private Bitmap memoryImage;

[DllImport("gdi32.dll")]

public static extern long BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, int dwRop);

-------按钮事件

private void 打印_Click(object sender, EventArgs e)

{

CaptureScreen();

printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(this.printDocument1_PrintPage);

printDocument1.OriginAtMargins = true;

pageSetupDialog1.Document = printDocument1;

//显示打印配置页面

pageSetupDialog1.ShowDialog();

printPreviewDialog1.Document = printDocument1;

//显示打印预览界面

printPreviewDialog1.ShowDialog();

}

--------打印控件事件

private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)

{

e.Graphics.DrawImage(memoryImage, 0, 0);

}

-------------方法

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);

mygraphics.ReleaseHdc(dc1);

memoryGraphics.ReleaseHdc(dc2);

}