关于winform 打印问题

[kevinless1109]

在一个winform内设置了一个打印的button，点击后除了这个button，其他窗体内所有内容全部打印出来，怎么实现，求大虾回复

[rangeon]

        private void btnPrint_Click(object sender, EventArgs e)
        {
            SendKeys.Send("%{PRTSC}");
            Application.DoEvents();
            this.printDocument1.Print();   
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            IDataObject iData = Clipboard.GetDataObject();
            Image img = (Image)iData.GetData(DataFormats.Bitmap);
            e.Graphics.DrawImage(img, 0, 0);
        }

[rangeon]

另一法：

[System.Runtime.InteropServices.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);
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);
    mygraphics.ReleaseHdc(dc1);
    memoryGraphics.ReleaseHdc(dc2);
}
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)
{
    CaptureScreen();
    printDocument1.Print();
}