Many novice users of the three-tier architecture, the most three-tier system can not start to write a simple three-tier architecture, hope to be able to help

简单3层示例13-2-2\简单3层示例13-2-2.sln
.................\简单3层示例13-2-2.suo
.................\Web\Default.aspx
.................\...\Default.aspx.cs
.................\...\web.config
.................\...\Bin\BLL.dll
.................\...\...\BLL.pdb
.................\...\...\DAL.dll
.................\...\...\DAL.pdb
.................\...\App_Data\manager.mdb
.................\Model\Class1.cs
.................\.....\Model.csproj
.................\.....\Properties\AssemblyInfo.cs
.................\DAL\DAL.csproj
.................\...\DALUser.cs
.................\...\Properties\AssemblyInfo.cs
.................\...\obj\Debug\DAL.csproj.FileListAbsolute.txt
.................\...\...\.....\DAL.dll
.................\...\...\.....\DAL.pdb
.................\...\...\.....\Refactor\DAL.dll
.................\...\bin\Debug\DAL.dll
.................\...\...\.....\DAL.pdb
.................\BLL\BLL.csproj
.................\...\BLLUser.cs
.................\...\Properties\AssemblyInfo.cs
.................\...\obj\Debug\BLL.csproj.FileListAbsolute.txt
.................\...\...\.....\BLL.dll
.................\...\...\.....\BLL.pdb
.................\...\...\.....\ResolveAssemblyReference.cache
.................\...\...\.....\..factor\BLL.dll
.................\...\bin\Debug\BLL.dll
.................\...\...\.....\BLL.pdb
.................\...\...\.....\DAL.dll
.................\...\...\.....\DAL.pdb
.................\Model\obj\Debug\TempPE
.................\.....\...\.....\Refactor
.................\DAL\obj\Debug\TempPE
.................\...\...\.....\Refactor
.................\BLL\obj\Debug\TempPE
.................\...\...\.....\Refactor
.................\Model\bin\Debug
.................\.....\obj\Debug
.................\DAL\obj\Debug
.................\...\bin\Debug
.................\BLL\obj\Debug
.................\...\bin\Debug
.................\Web\Bin
.................\...\App_Data
.................\Model\bin
.................\.....\obj
.................\.....\Properties
.................\DAL\Properties
.................\...\obj
.................\...\bin
.................\BLL\Properties
.................\...\obj
.................\...\bin
.................\Web
.................\Model
.................\DAL
.................\BLL
简单3层示例13-2-2

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