MVC登录增删改查界面

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NewsRelease.Model;
using NewsRelease.DAL;
using System.Data;
using System.Data.SqlClient;

namespace NewsRelease.BLL
{
   public class AdminBLL
    {
       /// 

       /// 登陆：查询账号 是不是和输入的密码相符
       /// 

        /// Admin类型：用户名和密码
       /// 返回bool是否查询到数据
       public static bool CheckLogin（Admin u）
       {
           Admin a = AdminDAL.Find（u.UserName）;
           try
           {
               return a.UserPass == u.UserPass ? true : false;
           }
           catch 
           {
               return false;
               
           }
       }
       /// 

       /// 修改
       /// 

       /// Admin类型：用户名和密码
       /// bool类型是否修改数据成功
       public static bool Update（Admin u）
       {
           return AdminDAL.Update（u）;
       }
       /// 

       /// 新增用户名和密码
       /// 

       /// admin类型：用户名和密码
       /// bool类型是否插入新数据成功
       public static bool Add（Admin u）
       {
           return AdminDAL.Add（u）;
       }
       /// 

       /// 查询name是否存在
       /// 

       /// 用户名
       /// 返回的是bool类型
       public static bool Only（Admin u）
       {
           return AdminDAL.Only（u）;
       }

       public static bool Delete（Admin u）
       {
           return AdminDAL.Delete（u）;
       }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件        3169  2014-10-14 13:21  51Aspx源码必读.txt
     目录           0  2014-10-14 10:46  DB_51aspx
     文件     3145728  2014-10-14 13:21  DB_51aspxDB_news.mdf
     文件     1048576  2014-10-14 13:21  DB_51aspxDB_news_log.ldf
     目录           0  2014-10-14 10:46  NewsRelease.BLL
     文件        1831  2014-10-13 16:42  NewsRelease.BLLAdminBLL.cs
     文件        2761  2014-10-13 14:43  NewsRelease.BLLNewsRelease.BLL.csproj
     目录           0  2014-10-14 10:46  NewsRelease.BLLProperties
     文件        1362  2014-10-13 08:35  NewsRelease.BLLPropertiesAssemblyInfo.cs
     目录           0  2014-10-13 14:21  NewsRelease.BLLin
     目录           0  2014-10-14 10:46  NewsRelease.BLLinDebug
     文件        4608  2014-10-14 13:17  NewsRelease.BLLinDebugNewsRelease.BLL.dll
     文件       13824  2014-10-14 13:17  NewsRelease.BLLinDebugNewsRelease.BLL.pdb
     文件        7680  2014-10-14 13:17  NewsRelease.BLLinDebugNewsRelease.DAL.dll
     文件       22016  2014-10-14 13:17  NewsRelease.BLLinDebugNewsRelease.DAL.pdb
     文件        6144  2014-10-14 13:17  NewsRelease.BLLinDebugNewsRelease.Model.dll
     文件       26112  2014-10-14 13:17  NewsRelease.BLLinDebugNewsRelease.Model.pdb
     目录           0  2014-10-14 13:22  NewsRelease.BLLinRelease
     目录           0  2014-10-13 08:35  NewsRelease.BLLobj
     目录           0  2014-10-14 13:17  NewsRelease.BLLobjDebug
     文件        5978  2014-10-14 13:17  NewsRelease.BLLobjDebugDesignTimeResolveAssemblyReferencesInput.cache
     文件        1793  2014-10-14 10:50  NewsRelease.BLLobjDebugNewsRelease.BLL.csproj.FileListAbsolute.txt
     文件       13793  2014-10-14 13:17  NewsRelease.BLLobjDebugNewsRelease.BLL.csprojResolveAssemblyReference.cache
     文件        4608  2014-10-14 13:17  NewsRelease.BLLobjDebugNewsRelease.BLL.dll
     文件       13824  2014-10-14 13:17  NewsRelease.BLLobjDebugNewsRelease.BLL.pdb
     目录           0  2014-10-14 13:22  NewsRelease.BLLobjDebugTempPE
     目录           0  2014-10-14 10:46  NewsRelease.DAL
     文件        4176  2014-10-13 16:42  NewsRelease.DALAdminDAL.cs
     文件        4960  2014-10-13 16:18  NewsRelease.DALDBSQLHelper.cs
     文件        2601  2014-10-13 11:20  NewsRelease.DALNewsRelease.DAL.csproj
     目录           0  2014-10-14 10:46  NewsRelease.DALProperties
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