Discuz!NT论坛和网站同步登陆代码（献丑了）

//命名空间

using System;

using System.Collections;

using System.Configuration;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Xml.Linq;

using System.IO;

using System.Text;

using System.Security.Cryptography;

using Discuz.Common;//引用论坛的Discuz.Common.dll

using System.Text.RegularExpressions;

string encryptString = "e10adc3949ba59abbe56e057f20f883e";//从论坛中取出用户所属md5加密后的密码

string encryptKey = "RV8JX664X8";//论坛文件夹Discuz.Web\config\general.config中找到<Passwordkey>节点获取key

encryptKey = Utils.GetSubString(encryptKey, 8, "");

encryptKey = encryptKey.PadRight(8, ' ');

byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));

byte[] rgbIV = Keys;

byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);

DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();

MemoryStream mStream = new MemoryStream();

CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);

cStream.Write(inputByteArray, 0, inputByteArray.Length);

cStream.FlushFinalBlock();

HttpCookie co = new HttpCookie("dnt");//Cookie名字

co["userid"] = "1";//登陆者编号ID

co["password"] = Utils.UrlEncode(Convert.ToBase64String(mStream.ToArray())).ToString();

//第二次经过处理后的密码存入cookie中

HttpContext.Current.Response.Cookies.Add(co);//cookie保存，刷新论坛首页 用户已经处于登陆状态了