webBrowser对跳转后的页面的处理

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 自动填写数据
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            if (webBrowser1.ReadyState == WebBrowserReadyState.Complete)//判断页面重新加载的情况
            {
                string dd = webBrowser1.Url.LocalPath;
                if (webBrowser1.Url.LocalPath.IndexOf("WebForm1.aspx") > 0)//已经跳转到第2个页面了
                {
                    button2_Click(sender, e);
                }
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {
            //填充账户          
            webBrowser1.Document.GetElementById("TextBox1").InnerText = textBox1.Text.Trim();
            //填充密码       
            webBrowser1.Document.GetElementById("TextBox2").InnerText = textBox2.Text.Trim();
            //调用登录按钮click事件       
            webBrowser1.Document.GetElementById("btnClose").InvokeMember("click");
            //获取提示信息        
            //string ts = webBrowser1.Document.GetElementById("error_div").InnerText;       
            //if (ts != "")            
            //    MessageBox.Show(ts);
            //while (webBrowser1.Url.LocalPath.IndexOf("WebForm1.aspx") > 0)
            //{
            //    textBox3.Text = webBrowser1.Document.GetElementById("TextBox4").InnerText;
            //}

            Application.DoEvents();
        }

        private void button2_Click(object sender, EventArgs e)//第2个页面的处理方法
        {
            webBrowser1.Document.GetElementById("TextBox4").InnerText = textBox3.Text;
        }
    }
}