WinForm将html内容转化成图片

using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Linq;  
using System.Text;  
using System.Windows.Forms;  
  
namespace TCP  
{  
    public partial class Form1 : Form  
    {  
        public Form1()  
        {  
            InitializeComponent();  
        }  
        WebBrowser webBrowser = null;  
        public void ConvertToImg()  
        {  
            //string html = "<div><table border = \"1\" cellspacing = \"0\" cellpadding = \"3\" style = \"text-align:center;\"><tr><th style = \"width:60px;\">字段1</th><th style = \"width:60px;\">字段2</th><th style = \"width:60px;\">字段3</th></tr><tr style = \"color:green;\"><td>小明</td><td>22</td><td>185</td></tr><tr style = \"color:red;\"><td>小青</td><td>21</td><td>170</td></tr></table></div>";  
  
            webBrowser = new WebBrowser();  
  
            //是否显式滚动条  
            webBrowser.ScrollBarsEnabled = false;  
  
            //加载 html  
            webBrowser.Navigate("http://www.baidu.com");  
  
            //页面加载完成执行事件  
            webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted);  
        }  
  
        private void webBrowser_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作  
        {  
            //获取解析后HTML的大小  
            System.Drawing.Rectangle rectangle = webBrowser.Document.Body.ScrollRectangle;  
            int width = rectangle.Width;  
            int height = rectangle.Height;  
  
            //设置解析后HTML的可视区域  
            webBrowser.Width = width;  
            webBrowser.Height = height;  
  
            Bitmap bitmap = new System.Drawing.Bitmap(width, height);  
            webBrowser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height));  
  
            //设置图片文件保存路径和图片格式，格式可以自定义  
            string filePath = AppDomain.CurrentDomain.BaseDirectory + "Img\\" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png";  
            bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png);  
        }  
  
        private void button1_Click(object sender, EventArgs e)  
        {  
            ConvertToImg();  
        }  
    }  
  
}