C#实现网页截图功能

private void Form_Load(object sender, EventArgs e)
{
  //接收web url
  string colle = string.Empty;
  string url = string.Empty;
  //获取进程调用传入的命令
  string[] args = Environment.GetCommandLineArgs();
  string[] args = new string[] { @"E:\MicroSpace\MicroSpace\localpage\Debug\GetCutImage.exe", "-u:http://sliefj.com/template/amo.html","-n:E:\\TEST\\test.jpg" };
  for (int i = 1; i < args.Length; i++)
  {
 switch (args[i].Substring(0, 3))
 {
   case "-u:":
 url = args[i].Substring(3);
 break;
   case "-n:":
 imagename = args[i].Substring(3);
 break;
   default:            
 colle = args[i];
 break;
 }
  }
  WebBrowser webBrowser = new WebBrowser(); // 创建一个WebBrowser
  webBrowser.ScrollBarsEnabled = false; // 隐藏滚动条
  webBrowser.Navigate(url); // 打开网页
  webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted); // 增加网页加载完成事件处理函数
}
private void webBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
  WebBrowser webBrowser = (WebBrowser)sender;
  // 网页加载完毕才保存
  if (webBrowser.ReadyState == WebBrowserReadyState.Complete)
  {
 bool save_suc = true;
 try
 {
   // 获取网页高度和宽度,也可以自己设置
   int height = webBrowser.Document.Body.ScrollRectangle.Height;
   int width = webBrowser.Document.Body.ScrollRectangle.Width;

   //截图宽度、高度
   int imgwidth = width - 2 * 60;
   int imgheight = height - 48;

   // 调节webBrowser的高度和宽度
   webBrowser.Height = height;
   webBrowser.Width = width;

   Bitmap bitmap = new Bitmap(width, height); // 创建高度和宽度与网页相同的图片
   Rectangle rectangle = new Rectangle(0, 0, width, height); // 绘图区域
   //Rectangle mm=new Rectangle(
   webBrowser.DrawToBitmap(bitmap, rectangle); // 绘制浏览器图片至bitmap

   int bmpw = bitmap.Width;
   int bmph = bitmap.Height;

   System.Drawing.Image Imag = new System.Drawing.Bitmap(imgwidth, imgheight);//创建Image
   System.Drawing.Graphics gp = System.Drawing.Graphics.FromImage(Imag);//获取Image的Graphics

   //通过Graphics绘图实现截图效果
   gp.DrawImage(bitmap,new Rectangle(0,0,imgwidth,imgheight),new Rectangle(60,48,imgwidth,imgheight),GraphicsUnit.Pixel);
   //保存
   Imag.Save(imagename, System.Drawing.Imaging.ImageFormat.Jpeg);
   //bitmap.Save(imagename, System.Drawing.Imaging.ImageFormat.Jpeg);
   bitmap.Dispose();
   gp.Dispose();
   Imag.Dispose();
 }
 catch (Exception ex)        { 
 }
 finally
 {
   this.Dispose(true);
   System.Diagnostics.Process.GetCurrentProcess().Kill();
   this.Close();
   Application.Exit();
 }
  }
}
//图片保存方式
//imagename 图片路径
bitmap.Save(imagename, System.Drawing.Imaging.ImageFormat.Jpeg);
Image.Save(imagename, System.Drawing.Imaging.ImageFormat.Jpeg);