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("
     
      ");            sbContent.Append("
        ");            sbContent.Append("
");            sbContent.Append("
");            sbContent.Append("
        ");            sbContent.Append("
");            sbContent.Append("
");            sbContent.Append("
        ");            sbContent.Append("
");            sbContent.Append("
");            sbContent.Append("
");            sbContent.Append("标题2");            sbContent.Append("
");            sbContent.Append("【环球时报综合报道】");            sbContent.Append("
");            sbContent.Append("时间" + DateTime.Now.ToString());            sbContent.Append("
");             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();            }        }    }}

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