<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" AspCompat="true" %>

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
 
public partial class _Default : System.Web.UI.Page
{
    private WebBrowser _webBrowser;
   
   
    protected void Page_Load(object sender, EventArgs e)
    {
        string url = Request.QueryString["url"];
        if (string.IsNullOrEmpty(url))
        {
            url = "http://www.cftea.com/";
        }
       
        _webBrowser = new WebBrowser();
        _webBrowser.ScrollBarsEnabled = false; //不显示滚动条
        _webBrowser.Navigate(url);
        _webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(Completed);
       
        while (_webBrowser.ReadyState != WebBrowserReadyState.Complete)
        {
            System.Windows.Forms.Application.DoEvents(); //避免假死，若去掉则可能无法触发 DocumentCompleted 事件。
        }
    }
   
   
    public void Completed(object sender, WebBrowserDocumentCompletedEventArgs e)
    {
        //设置浏览器宽度、高度为文档宽度、高度，以便截取整个网页。
        _webBrowser.Width = _webBrowser.Document.Body.ScrollRectangle.Width;
        _webBrowser.Height = _webBrowser.Document.Body.ScrollRectangle.Height;
        using (Bitmap bmp = new Bitmap(_webBrowser.Width, _webBrowser.Height))
        {
            _webBrowser.DrawToBitmap(bmp, new Rectangle(0, 0, bmp.Width, bmp.Height));
            bmp.Save("C:\\Capture.png", ImageFormat.Png);
        }
    }
}