C#URL编码解码演示代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
jiema();
//bianma();
}

public static void jiema()
{
string oStr = "http://www.baidu.com/s?bs=%D6%D0%B9%FA&f=8&wd=%D6%D0%B9%FA";
//oStr是UrlEncode编码字符串
Encoding gb2312 = Encoding.GetEncoding("gb2312");
Encoding utf8 = Encoding.UTF8;
//首先用utf-8进行解码
string key = HttpUtility.UrlDecode(oStr, utf8);
// 将已经解码的字符再次进行编码.
string encode = HttpUtility.UrlEncode(key, utf8).ToLower();
//与原来编码进行对比，如果不一致说明解码未正确，用gb2312进行解码
if (oStr != encode)
key = HttpUtility.UrlDecode(oStr, gb2312);

Console.WriteLine(key);
Console.ReadKey();
}

public static void bianma()
{
string oStr = "聚合";
//oStr是UrlEncode编码字符串
Encoding gb2312 = Encoding.GetEncoding("gb2312");
string m = System.Web.HttpUtility.UrlEncode(oStr, gb2312);

Console.WriteLine(m);
Console.ReadKey();
}
}
}