實現簡單的 hosts 添加和刪除工具
		
          
		
           1using System;
          
           2using System.Collections.Generic;
          
           3using System.ComponentModel;
          
           4using System.Data;
          
           5using System.Drawing;
          
           6using System.Linq;
          
           7using System.Text;
          
           8using System.Windows.Forms;
          
           9using System.IO;
          
          10
          
          11namespace Google.le
          
          12{
          
          13    public partial class Form1 : Form
          
          14    {
          
          15        public Form1()
          
          16        {
          
          17            InitializeComponent();
          
          18        }
          
          19        /// <summary>
          
          20        /// 按鈕事件，檢查hosts 中是否有 相關的條目
          
          21        /// </summary>
          
          22        /// <param name="sender"></param>
          
          23        /// <param name="e"></param>
          
24        private void button1_Click(object sender, EventArgs e)
          
          25        {
          
          26            string fileName = @"C:\Windows\System32\drivers\etc\hosts";
          
          27            if (File.Exists(fileName))
          
          28            {
          
          29                MessageBox.Show("file exists");
          
          30             //讀文件stream
          
          31                StreamReader stream = null;
          
          32               //保存文件定義的字節(jié)流  
          
          33                StreamWriter streamWriter = null;
          
          34                List <string>ls = new List<string>();
          
          35
          
          36                try
          
          37                {
          
          38                    //打開hosts
          
          39                    stream = new StreamReader(fileName);
          
          40                    // a 標記是否有相關條目
          
          41                    bool a = false;
          
          42                    string strtemp="";
          
          43                    string temp;
          
          44                    while ((temp=stream.ReadLine())!=null) {
          
          45                        
          
          46                       //相關條目名稱 這里以Goog。le為例
          
          47                        if (temp.StartsWith("#Goog.le")) {
          
          48                            a = true;
          
          49                            stream.ReadLine();
          
          50                            stream.ReadLine();
          
          51                        }          else {
          
          52                           
          
          53                         strtemp+=temp+Environment.NewLine;
          
          54                        }
          
          55
          
          56                    }
          
          57
          
          58                    if (a) {
          
          59                        MessageBox.Show("刪除完畢");
          
          60                    }
          
          61                    else {
          
          62                        strtemp += "#Goog.le"+ Environment.NewLine+"203.208.37.99 goog.le"+Environment.NewLine+"203.208.37.99 webcache.googleusercontent.com"+Environment.NewLine;
          
          63                       
          
          64                        
          
          65                        MessageBox.Show("已經添加");
          
          66                        
          
          67                    }
          
          68                    richTextBox1.Text = strtemp;
          
          69                    stream.Close();
          
          70                    streamWriter = new StreamWriter(fileName);
          
          71                    
          
          72                    streamWriter.Write(strtemp);
          
          73                    streamWriter.Flush();
          
          74                    streamWriter.Close();
          
          75                }
          
          76                catch (IOException){
          
          77                
          
          78                }
          
          79
          
          80            }
          
          81            else
          
          82            {
          
          83                MessageBox.Show("file not found");
          
          84            }
          
          85        }
          
          86    }
          
          87}
          
          88
          
關于用程序修改 hosts 這里做了簡單的版本。這里用一種取巧的方式，并沒有用正則表達式匹配。（雖說正則表達式的效果會好一點）以后有機會做一個正則表達式的。這個小程序正好是我的一個朋友需要的小工具。臨時湊合了一個。
          

          
----------------以下是hosts的相關格式------此程序只適用于以下格式的hosts
          

          

          # Copyright (c) 1993-1999 Microsoft Corp.
          
#
          
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
          
#
          
# This file contains the mappings of IP addresses to host names. Each
          
# entry should be kept on an individual line. The IP address should
          
# be placed in the first column followed by the corresponding host name.
          
# The IP address and the host name should be separated by at least one
          
# space.
          
#
          
# Additionally, comments (such as these) may be inserted on individual
          
# lines or following the machine name denoted by a '#' symbol.
          
#
          
# For example:
          
#
          
#      102.54.94.97     rhino.acme.com          # source server
          
#       38.25.63.10     x.acme.com              # x client host
          

          #127.0.0.1         localhost                               
          

           218.11.132.81     f1.xiami.net                             #f3.xiami.net
          
#Goog.le
          
203.208.37.99 goog.le
          
203.208.37.99 webcache.googleusercontent.com
          
——————————————————————————————————————————————————————————
          
最后貼上一個我朋友的博客http://sneezry.com/ 里面有相關google的中國穩(wěn)定的訪問方式一文值得推薦

		
          
			posted on 2011-02-21 00:01 scorpio小蝎 閱讀(1070) 評論(0)  編輯  收藏  所屬分類: C# 
		
          
	
          
	
	


	


          
	    
    




          








          

				
				

			
          
			
          
				
					
          
	
          
		
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