winfrom将控件保存为图片

案例：将panelEx2保存为png图片

string chartUrl = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + @"Chart_d" + velocityId + ".png";
Bitmap bmp = new Bitmap(panelEx2.Width, panelEx2.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
panelEx2.DrawToBitmap(bmp, new Rectangle(0, 0, panelEx2.Width, panelEx2.Height));
bmp.Save(chartUrl, System.Drawing.Imaging.ImageFormat.Png);

 将 Steema.TeeChart.TChart 保存为图片

string chartUrl = @".Chart_d" + velocityId + ".png"; 
tChart1.Export.Image.PNG.Save(chartUrl); //保存为png格式;

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