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));
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