如何在Windows应用程序中打印Web表单
问题描述：
当我点击打印按钮时，我想打印一个表格，因为我正在使用printform组件，但它显示我选择一个文件，就像我们上传的东西一样。
我该怎么做
I wanna a form to print when i click on print button,for that I'm using printform component but it showing me a to select a file like when we upload something.
how can i do this
答
private void ButtonPrintClick（object sender，EventArgs e）
{
//创建文档
PrintDocument _document = new PrintDocument（）;
//添加打印处理程序
_document.PrintPage + = new PrintPageEventHandler（Document_PrintPage）;
//创建显示结果的对话框
PrintPreviewDialog _dlg = new PrintPreviewDialog（）;
_dlg.ClientSize = new System.Drawing.Size（Width / 2，Height / 2）;
_dlg.Location = new System.Drawing.Point（Left，Top）;
_dlg。 MinimumSize = new System.Drawing.Size（375,250）;
_dlg.UseAntiAlias = true;
//设置我们的文件
_dlg.Document = _document;
//显示它
_dlg.ShowDialog（this）;
//处理文件
_document.Dispose（）;
}
//打印处理程序
private void Document_PrintPage（object sender，PrintPageEventArgs e）
{
//创建位图表单大小
位图_bitmap =新位图（宽度，高度，System.Drawing.Imaging.PixelFormat.Format32bppRgb）;
//从位图DC绘制
this.DrawToBitmap（_bitmap，this.DisplayRectangle）;
//将位图绘制到打印机DC
e.Graphics.DrawImage（_bitmap，0,0） ;
//不再需要 - 处理它
_bitmap.Dispose（）;
}
试试这个并告诉我
private void ButtonPrintClick(object sender, EventArgs e)
{
// Create document
PrintDocument _document = new PrintDocument();
// Add print handler
_document.PrintPage += new PrintPageEventHandler(Document_PrintPage);
// Create the dialog to display results
PrintPreviewDialog _dlg = new PrintPreviewDialog();
_dlg.ClientSize = new System.Drawing.Size(Width / 2, Height / 2);
_dlg.Location = new System.Drawing.Point(Left, Top);
_dlg.MinimumSize = new System.Drawing.Size(375, 250);
_dlg.UseAntiAlias = true;
// Setting up our document
_dlg.Document = _document;
// Show it
_dlg.ShowDialog(this);
// Dispose document
_document.Dispose();
}
// Print handler
private void Document_PrintPage(object sender, PrintPageEventArgs e)
{
// Create Bitmap according form size
Bitmap _bitmap = new Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format32bppRgb);
// Draw from into Bitmap DC
this.DrawToBitmap(_bitmap, this.DisplayRectangle);
// Draw Bitmap into Printer DC
e.Graphics.DrawImage(_bitmap,0,0);
// No longer deeded - dispose it
_bitmap.Dispose();
}
Try this and let me know