复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
private WebBrowser _webBrowser;
public Form1()
{
InitializeComponent();
}
public void GetThumbNail(string url)
{
_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("Capture.png", System.Drawing.Imaging.ImageFormat.Png);
pictureBox1.ImageLocation = "Capture.png";
}
}
private void button1_Click(object sender, EventArgs e)
{
GetThumbNail(textBox1.Text);
}
}
}