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(); <strong style="color:transparent">来源gaodai#ma#com搞@代~码$网</strong>sr.Close(); this.richTextBox1.Text = str;///读取 } } } @"C:\windows\system32\drivers\etc" + "\\hosts"文件路径