Simple login and user management to demonstrate the use of the three-tier structure, used by data-bound controls: the GridView I have been looking for a robust three-tier architecture I have been studying the last discovered the benefits of using automatically connect automatically shut down in the BLL do in business logic operation UI display the Web/App_Data default login account/password database file is Sql2005: 51aspx/51aspx

3LayerLogin\3LayerLogin\MVC.sln
...........\...........\SystemBLL\bin\Debug\SystemBLL.dll
...........\...........\.........\...\.....\SystemBLL.pdb
...........\...........\.........\...\.....\SystemDAL.dll
...........\...........\.........\...\.....\SystemDAL.pdb
...........\...........\.........\...\.....\SystemModel.dll
...........\...........\.........\...\.....\SystemModel.pdb
...........\...........\.........\BLL.cs
...........\...........\.........\obj\Debug\Refactor\SystemBLL.dll
...........\...........\.........\...\.....\ResolveAssemblyReference.cache
...........\...........\.........\...\.....\SystemBLL.dll
...........\...........\.........\...\.....\SystemBLL.pdb
...........\...........\.........\...\SystemBLL.csproj.FileList.txt
...........\...........\.........\Properties\AssemblyInfo.cs
...........\...........\.........\SystemBLL.csproj
...........\...........\......DAL\bin\Debug\SystemDAL.dll
...........\...........\.........\...\.....\SystemDAL.pdb
...........\...........\.........\...\.....\SystemModel.dll
...........\...........\.........\...\.....\SystemModel.pdb
...........\...........\.........\DAL.cs
...........\...........\.........\obj\Debug\Refactor\SystemDAL.dll
...........\...........\.........\...\.....\ResolveAssemblyReference.cache
...........\...........\.........\...\.....\SystemDAL.dll
...........\...........\.........\...\.....\SystemDAL.pdb
...........\...........\.........\...\SystemDAL.csproj.FileList.txt
...........\...........\.........\Properties\AssemblyInfo.cs
...........\...........\.........\SystemDAL.csproj
...........\...........\......Model\bin\Debug\SystemModel.dll
...........\...........\...........\...\.....\SystemModel.pdb
...........\...........\...........\LoginModel.cs
...........\...........\...........\obj\Debug\Refactor\SystemModel.dll
...........\...........\...........\...\.....\SystemModel.dll
...........\...........\...........\...\.....\SystemModel.pdb
...........\...........\...........\...\SystemModel.csproj.FileList.txt
...........\...........\...........\Properties\AssemblyInfo.cs
...........\...........\...........\SystemModel.csproj
...........\...........\WEB\App_Data\test.mdf
...........\...........\...\........\test_log.LDF
...........\...........\...\Bin\System.Web.Extensions.Design.dll
...........\...........\...\...\System.Web.Extensions.dll
...........\...........\...\...\SystemBLL.dll
...........\...........\...\...\SystemBLL.pdb
...........\...........\...\...\SystemDAL.dll
...........\...........\...\...\SystemDAL.pdb
...........\...........\...\...\SystemModel.dll
...........\...........\...\...\SystemModel.pdb
...........\...........\...\Login.aspx
...........\...........\...\Login.aspx.cs
...........\...........\...\test.aspx
...........\...........\...\test.aspx.cs
...........\...........\...\Web.config
...........\...........\源码必读.txt
...........\...........\说明.htm
...........\...........\SystemBLL\obj\Debug\Refactor
...........\...........\.........\...\.....\TempPE
...........\...........\......DAL\obj\Debug\Refactor
...........\...........\.........\...\.....\TempPE
...........\...........\......Model\obj\Debug\Refactor
...........\...........\...........\...\.....\TempPE
...........\...........\......BLL\bin\Debug
...........\...........\.........\obj\Debug
...........\...........\......DAL\bin\Debug
...........\...........\.........\obj\Debug
...........\...........\......Model\bin\Debug
...........\...........\...........\obj\Debug
...........\...........\......BLL\bin
...........\...........\.........\obj
...........\...........\.........\Properties
...........\...........\......DAL\bin
...........\...........\.........\obj
...........\...........\.........\Properties
...........\...........\......Model\bin
...........\...........\...........\obj
...........\...........\...........\Properties
...........\...........\WEB\App_Data
...........\...........\...\Bin
...........\...........\SystemBLL
...........\...........\SystemDAL
...........\...........\SystemModel
...........\...........\WEB
...........\3LayerLogin
3LayerLog

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