C# WebClient获取网页源码的方法

效果如图

完整代码如下

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
//引入以下命名空间
using System.Net;
using System.IO;
using System.Threading;
namespace splitstr
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Thread t = null;
        Encoding EE = Encoding.UTF8;//网页编码,根据实际情况来哈
        private void bt_gethtml_Click(object sender, EventArgs e)
        {
            if (tb_url.Text.Trim() != "")
            {
                t = new Thread(new ThreadStart(Ss));
                t.Start();
            }
        }
        private delegate void SetObject();
        private void Ss()
        {
            //CheckForIllegalCrossThreadCalls = false;
            this.Invoke(new SetObject(delegate { bt_gethtml.Enabled = tb_url.Enabled = false; }));
            this.Invoke(new SetObject(delegate { richTextBox1.Text = GetHtml(tb_url.Text.Trim(), EE); }));
            this.Invoke(new SetObject(delegate { bt_gethtml.Enabled = tb_url.Enabled = true; }));
            t.Abort();
        }
        private string GetHtml(string url,Encoding ecd)
        {
            //参数说明：目标网址,网页编码
            string htmldata = "获取网页内容失败";
            try
            {
                WebClient wclient = new WebClient();//实例化WebClient类对象
                wclient.BaseAddress = url;//设置WebClient的基URI
                wclient.Encoding = ecd;//指定下载字符串的编码方式
                //为WebClient类对象添加标头
                wclient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
                //使用OpenRead方法获取指定网站的数据，并保存到Stream流中
                Stream stream = wclient.OpenRead(url);
                //使用流Stream声明一个流读取变量sreader
                StreamReader sreader = new StreamReader(stream);
                string str = string.Empty;//声明一个变量，用来保存一行从WebCliecnt下载的数据
                //循环读取从指定网站获得的数据
                while ((str = sreader.ReadLine()) != null)
                {
                    htmldata += str + "\n";
                }
            }
            catch { }
            return htmldata;
        }
    }
}

当然获取网页源码还有其他的方法，过后再分享