操纵IE，模拟用户登录

操作IE浏览器，模拟用户登录，首先需要两个程序集：shdocvw.dll和mshtml.dll；

新建项目将程序集引用到项目中；

代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using mshtml;
using SHDocVw;
using System.Threading;
using System.Diagnostics;

namespace StudyPrograms
{
    class Program
    {
        static AutoResetEvent documentComplete = new AutoResetEvent(false);
 
        static void Main(string[] args)
        {
            Console.WriteLine(DateTime.Now.ToString() + " 开始");
            InternetExplorer ie = GetInternetExplorer();
            if (ie != null)
            {
                Run(ie);
            }
            Console.WriteLine(DateTime.Now.ToString() + " 结束");
        }

        private static InternetExplorer GetInternetExplorer()
        {
            InternetExplorer ie = null;
            Console.WriteLine(DateTime.Now.ToString() + " 加载IE实例");

            //查找是否有打开的IE进程窗口，如果已经包含CSDN登录页，则得到此进程
            Process[] processes = Process.GetProcesses();
            Process process = null;
            foreach (Process p in processes)
            {
                if (string.Compare(p.ProcessName, "iexplore", true) == 0)
                {
                    if (p.MainWindowTitle.IndexOf("CSDN 用户登录") >= 0) // CSDN 用户登录 - Windows Internet Explorer

                    {
                        process = p;
                        break;
                    }
                }
            }

            //如果没有则启动IE实例
            if (process == null)
            {
                process = Process.Start("iexplore.exe", "about:blank");
            }

            if (process == null)
            {
                Console.WriteLine(DateTime.Now.ToString() + " 无法启动IE");
                return null;
            }

            Thread.Sleep(3000);
            try
            {

                Console.WriteLine(DateTime.Now.ToString() + " Process Handle: " + process.MainWindowHandle.ToString());
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return null;
            }

            ShellWindows browsers = new ShellWindows();
            Console.WriteLine(DateTime.Now.ToString() + " 活动浏览器数量: " + browsers.Count);
            if (browsers.Count == 0)
            {
                Console.WriteLine(DateTime.Now.ToString() + " 未找到IE");
            }

            //如果找到匹配的IE进程，则把当前InternetExplorer对象连接到正在运行的IE程序
            Console.WriteLine(DateTime.Now.ToString() + " 附加到IE");
            int i = 0;
            while (i < browsers.Count && ie == null)
            {
                InternetExplorer e = browsers.Item(i) as InternetExplorer;
                if (e != null)
                {
                    if (e.HWND == (int)process.MainWindowHandle)
                    {
                        ie = e;
                        break;
                    }
                }
                ++i;
            }
            if (ie == null)
            {
                Console.WriteLine(DateTime.Now.ToString() + " 附加到IE失败");
            }
            return ie;
        }

        private static void Run(InternetExplorer ie)
        {
            ie.DocumentComplete += new DWebBrowserEvents2_DocumentCompleteEventHandler(ie_DocumentComplete);

            try
            {
                HTMLDocument document = null;
 
                object o = new object();
                //导航到 博客园 登录页
                ie.Navigate("http://passport.cnblogs.com/user/signin?ReturnUrl=http%3A%2F%2Fwww.cnblogs.com%2Fcate%2Fbeginner%2F", ref o, ref o, ref o, ref o);
                documentComplete.WaitOne(1000, true);

                document = ie.Document as HTMLDocument;
                if (document != null)
                {
                    //以下操纵IE Shell
                    HTMLInputElement loginname = document.getElementById("input1") as HTMLInputElement;
                    if (loginname != null)
                    {
                        loginname.value = "用户名";
                    }
                    HTMLInputElement pwd = document.getElementById("input2") as HTMLInputElement;
                    if (pwd != null)
                    {
                        pwd.value = "密码";
                    }
                    //HTMLInputButtonElement imagecode = document.getElementById("ctl00_CPH_Content_tb_ExPwd") as HTMLInputButtonElement;
                    //if (imagecode != null)
                    //{
                    //    Console.Write("输入验证码:");
                    //    //控制台窗口输入验证码
                    //    string code = Console.ReadLine();
                    //    imagecode.value = code;
                    //}
                    HTMLButtonElement signin = document.getElementById("signin") as HTMLButtonElement;
                    if (signin != null)
                    {
                        signin.click();
                        documentComplete.WaitOne(1000, true);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            
        //    ie.Quit();
        }

        private static void ie_DocumentComplete(object pDisp, ref object URL)
        {
            documentComplete.Set();
        }
    }
}

使用前关闭所有IE浏览器，然后运行，否则会出现异常，目前没解决