C#读取host文件代码

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.IO;

using System.Text;

using System.Windows.Forms;

namespace 读取host文件

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            string str;

            StreamReader sr = new StreamReader(@"C:\windows\system32\drivers\etc" + "\\hosts", false);

            str = sr.ReadToEnd().ToString();

            sr.Close();

            this.richTextBox1.Text = str;///读取

        }

   }

}

@"C:\windows\system32\drivers\etc" + "\\hosts"文件路径