【C#】[网络]WebBrowser网页操作(提取元素,自动填表)

说明：做了个简单的表单html文件，方便查看效果。附件中：bin\Debug\Test.html

 

效果示例源码下载(Vs 2008)

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;//

namespace WebBrowser网页操作
{
    public class Element
    {

        //根据Name获取元素
        public HtmlElement GetElement_Name(WebBrowser wb,string Name)
        {
            HtmlElement e = wb.Document.All[Name];
            return e;
        }

        //根据Id获取元素
        public HtmlElement GetElement_Id(WebBrowser wb, string id)
        {
            HtmlElement e = wb.Document.GetElementById(id);
            return e;
        }

        //根据Index获取元素
        public HtmlElement GetElement_Index(WebBrowser wb,int index)
        {
            HtmlElement e = wb.Document.All[index];
            return e;           
        }

        //获取form表单名name,返回表单
        public HtmlElement GetElement_Form(WebBrowser wb,string form_name)
        {
            HtmlElement e = wb.Document.Forms[form_name];
            return e;
        }


        //设置元素value属性的值
        public void Write_value(HtmlElement e,string value)
        {
            e.SetAttribute("value", value);
        }
        
        //执行元素的方法，如：click，submit(需Form表单名)等
        public void Btn_click(HtmlElement e,string s)
        {

            e.InvokeMember(s); 
        }

    }
}

这是调用这个类的窗体代码：

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 WebBrowser网页操作
{
    public partial class Form1 : Form
    {

        Element el = new Element();

        public Form1()
        {
            InitializeComponent();
        }
        
        private void Form1_Load(object sender, EventArgs e)
        {
            webBrowser1.Navigate(Application.StartupPath + @"\Test.html");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            el.Write_value(el.GetElement_Name(webBrowser1,"username"),"isaced");
        }

        private void button2_Click(object sender, EventArgs e)
        {
            el.Write_value(el.GetElement_Id(webBrowser1, "password"), "123456");
        }

        private void button3_Click(object sender, EventArgs e)
        {
            el.Btn_click(el.GetElement_Id(webBrowser1,"button"),"click");//方法用的按钮click
        }

        private void button4_Click(object sender, EventArgs e)
        {
            el.Btn_click(el.GetElement_Form(webBrowser1, "form1"), "submit");//先获取表单，再调用表单的submit方法
        }
    }
}