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using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Bitmap bmp = HtmlToImg.GetHtmlToImg("http://cn.bing.com", 800, 600, 800, 600);//截取不到必应的背景图片,截取页面内容多的页面就变成空白了。
MemoryStream stream = new MemoryStream();
bmp.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg);
byte[] buff = stream.ToArray();
//保存图片
FileStream fs = new FileStream(Server.MapPath(DateTime.Now.ToString("HHmmss") + ".jpg"), FileMode.Create);
stream.WriteTo(fs);
stream.Close();
fs.Close();
}
}
using System;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;
/// <summary>
/// 生成网页快照
/// </summary>
public class HtmlToImg
{
Bitmap m_Bitmap;
string m_Url;
int m_BrowserWidth, m_BrowserHeight, m_ThumbnailWidth, m_ThumbnailHeight;
public HtmlToImg(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 GetHtmlToImg(string Url, int BrowserWidth, int BrowserHeight, int ThumbnailWidth, int ThumbnailHeight)
{
HtmlToImg thumbnailGenerator = new HtmlToImg(Url, BrowserWidth, BrowserHeight, ThumbnailWidth, ThumbnailHeight);
return thumbnailGenerator.GenerateHtmlToImgImage();
}
public Bitmap GenerateHtmlToImgImage()
{
Thread m_thread = new Thread(new ThreadStart(_GenerateHtmlToImgImage));
m_thread.SetApartmentState(ApartmentState.STA);
m_thread.Start();
m_thread.Join();
return m_Bitmap;
}
private void _GenerateHtmlToImgImage()
{
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);
}
}
private void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser m_WebBrowser = (WebBrowser)sender;
if(m_WebBrowser.ReadyState == WebBrowserReadyState.Complete)
{
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);
}
}
private void _GenerateHtmlToImgImage()
{
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 _GenerateHtmlToImgImage()
{
WebBrowser m_WebBrowser = new WebBrowser();
while (m_WebBrowser.ReadyState != WebBrowserReadyState.Complete)
{
m_WebBrowser.ScrollBarsEnabled = false;//内部浏览器的滚动条
m_WebBrowser.Navigate(m_Url);
m_WebBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
Application.DoEvents();
}
m_WebBrowser.Dispose();
}
private void _GenerateHtmlToImgImage()
{
WebBrowser m_WebBrowser = new WebBrowser();
m_WebBrowser.ScrollBarsEnabled = false;//内部浏览器的滚动条
m_WebBrowser.Navigate(m_Url);
while (m_WebBrowser.ReadyState != WebBrowserReadyState.Complete)
{
m_WebBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
Application.DoEvents();
}
m_WebBrowser.Dispose();
}
//浏览器Dom载入完毕
while (m_browser.ReadyState != WebBrowserReadyState.Complete)
{
Application.DoEvents();
}