C# 如何控制 打开的网页

例如单击按钮 搜索框内 自动填写
主要用于 自动其他网页快速自动填写登录信息

https://blog.csdn.net/lgjlry/article/details/3460189
类似这个思路，把google换成baidu

如果需要一个C#自动搜索百度的例子，采纳了可以帮你写一遍。

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;
using System.Diagnostics;
using System.Threading;
using SHDocVw;

namespace Q749719
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        SHDocVw.InternetExplorer ie;

        private void button1_Click(object sender, EventArgs e)
        {
            ie = new SHDocVw.InternetExplorer();
            ie.DocumentComplete += new SHDocVw.DWebBrowserEvents2_DocumentCompleteEventHandler(ie_DocumentComplete);
            complete = false;
            ie.Navigate("http://www.baidu.com");
            ie.Visible = true;
            while (!complete)
            {
                Application.DoEvents();
                Thread.Sleep(1000);
            }            
        }

        bool complete = false;

        private void button2_Click(object sender, EventArgs e)
        {
            var doc = ie.Document;
            doc.getElementById("kw").innerText = textBox1.Text;
        }

        void ie_DocumentComplete(object pDisp, ref object URL)
        {
            complete = true;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            var doc = ie.Document;
            doc.getElementById("su").click();
        }
    }
}

doc.getElementById("kw").innerText = textBox1.Text; 提示object不包含getElementByld的定义