using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Drawing; using System.Threading; using System.Windows.Forms; using System.Text; namespace WebApplication3 { public class WebSiteThumbnail { Bitmap m_Bitmap; string m_Url; string m_html = string.Empty; public WebSiteThumbnail(string Url, string Html) { m_Url = Url; m_html = Html; } /// /// 生成缩略图 /// /// 源码 /// public static Bitmap GetWebSiteThumbnail(string Html) { WebSiteThumbnail thumbnailGenerator = new WebSiteThumbnail("", Html); ReTest: Bitmap m_Bitmap = thumbnailGenerator.GenerateWebSiteThumbnailImage(); if (m_Bitmap == null) { goto ReTest; } return m_Bitmap; } 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.DocumentText = m_html; 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.ScrollBarsEnabled = false; m_WebBrowser.Width = m_WebBrowser.Document.Body.ScrollRectangle.Width; ; m_WebBrowser.Height = m_WebBrowser.Document.Body.ScrollRectangle.Height; 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_WebBrowser.Bounds.Width, m_WebBrowser.Bounds.Height, null, IntPtr.Zero); } } }
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Drawing; using System.IO; using System.Text; namespace WebApplication3 { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { StringBuilder sbContent = new StringBuilder(); sbContent.Append("<table border="1" width="400">"); sbContent.Append("<tr>"); sbContent.Append("<td>"); sbContent.Append("标题2"); sbContent.Append("</td>"); sbContent.Append("</tr>"); sbContent.Append("<tr>"); sbContent.Append("<td >"); sbContent.Append("【环球时报综合报道】"); sbContent.Append("</td>"); sbContent.Append("</tr>"); sbContent.Append("<tr>"); sbContent.Append("<td>"); sbContent.Append("时间" + DateTime.Now.ToString()); sbContent.Append("</td>"); sbContent.Append("</tr>"); sbContent.Append("</table>"); Bitmap m_Bitmap = WebSiteThumbnail.GetWebSiteThumbnail(sbContent.ToString()); if (m_Bitmap != null) { MemoryStream ms = new MemoryStream(); m_Bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); byte[] buff = ms.ToArray(); ms.Dispose(); ms.Close(); m_Bitmap.Dispose(); Response.ContentType = "image/jpg"; Response.BinaryWrite(buff); Response.End(); } } } }
from:http://blog.sina.com.cn/s/blog_42bea1a80101ay22.html