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       string uriString = "http://www.xxx.com/Login.aspx";
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       string postString = "userName=user1&password=password1";
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       WebClient webClient = new WebClient();
       webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
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       byte[] postData = Encoding.ASCII.GetBytes(postString);
       // ÉÏ´«Êý¾Ý£¬·µ»ØÒ³ÃæµÄ×Ö½ÚÊý×é
       byte[] responseData = webClient.UploadData(uriString, "POST", postData);
       // ·µ»ØµÄ½«×Ö½ÚÊý×éת»»³É×Ö·û´®(HTML)
       string srcString = Encoding.UTF8.GetString(responseData);
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ͼƬ»¬¶¯.aspx.cs" Inherits="ASP.net.ͼƬ»¬¶¯" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
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using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;namespace md5
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine(UserMd5("8"));
Console.WriteLine(GetMd5Str("8"));
}
/**//// &lt;summary&gt;
/// MD5 16λ¼ÓÃÜ ......

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