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[ASP.net教程]ASP.NET html转图片


using System.IO;using System.Drawing;using System.Threading;using System.Windows.Forms;public class WebSiteThumbnail{  Bitmap m_Bitmap;  string m_Url;  int m_BrowserWidth, m_BrowserHeight, m_ThumbnailWidth, m_ThumbnailHeight;  public WebSiteThumbnail(string Url, int BrowserWidth, int BrowserHeight, int ThumbnailWidth, int ThumbnailHeight)  {    m_Url = Url;    m_BrowserHeight = BrowserHeight;    m_BrowserWidth = BrowserWidth;    m_ThumbnailWidth = ThumbnailWidth;    m_ThumbnailHeight = ThumbnailHeight;  }  public static Bitmap GetWebSiteThumbnail(string Url, int BrowserWidth, int BrowserHeight, int ThumbnailWidth, int ThumbnailHeight)  {    WebSiteThumbnail thumbnailGenerator = new WebSiteThumbnail(Url, BrowserWidth, BrowserHeight, ThumbnailWidth, ThumbnailHeight);    return thumbnailGenerator.GenerateWebSiteThumbnailImage();  }  public Bitmap GenerateWebSiteThumbnailImage()  {    Thread m_thread = new Thread(new ThreadStart(_GenerateWebSiteThumbnailImage));    m_thread.SetApartmentState(ApartmentState.STA);    m_thread.Start();    m_thread.Join();    return m_Bitmap;  }  private void _GenerateWebSiteThumbnailImage()  {    WebBrowser m_WebBrowser = new WebBrowser();    m_WebBrowser.ScrollBarsEnabled = false;    m_WebBrowser.Navigate(m_Url);    m_WebBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);    while (m_WebBrowser.ReadyState != WebBrowserReadyState.Complete)      Application.DoEvents();    m_WebBrowser.Dispose();  }  private void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)  {    WebBrowser m_WebBrowser = (WebBrowser)sender;    m_WebBrowser.ClientSize = new Size(this.m_BrowserWidth, this.m_BrowserHeight);    m_WebBrowser.ScrollBarsEnabled = false;    m_Bitmap = new Bitmap(m_WebBrowser.Bounds.Width, m_WebBrowser.Bounds.Height);    m_WebBrowser.BringToFront();    m_WebBrowser.DrawToBitmap(m_Bitmap, m_WebBrowser.Bounds);    m_Bitmap = (Bitmap)m_Bitmap.GetThumbnailImage(m_ThumbnailWidth, m_ThumbnailHeight, null, IntPtr.Zero);  }}  Bitmap m_Bitmap = WebSiteThumbnail.GetWebSiteThumbnail("这里是html的连接地址", 990, 2798, 990, 2798);  MemoryStream ms = new MemoryStream();  m_Bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);//JPG、GIF、PNG等均可  byte[] buff = ms.ToArray();  Response.BinaryWrite(buff);  System.Drawing.Image img = byteArrayToImage(buff);  string url = "图片保存路径.png";  img.Save(HttpContext.Current.Server.MapPath(url));