三层架构
........\BLL
........\...\BLL.csproj
........\...\BLL_SELECT.cs
........\...\Properties
........\...\..........\AssemblyInfo.cs
........\...\bin
........\...\...\Debug
........\...\...\.....\BLL.dll
........\...\...\.....\BLL.pdb
........\...\...\.....\DAL.dll
........\...\...\.....\DAL.pdb
........\...\...\Release
........\...\obj
........\...\...\Debug
........\...\...\.....\BLL.csproj.FileListAbsolute.txt
........\...\...\.....\BLL.dll
........\...\...\.....\BLL.pdb
........\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
........\...\...\.....\ResolveAssemblyReference.cache
........\...\...\.....\TempPE
........\DAL
........\...\DAL.csproj
........\...\Properties
........\...\..........\AssemblyInfo.cs
........\...\PublicMethod.cs
........\...\PublicVar.cs
........\...\bin
........\...\...\Debug
........\...\...\.....\DAL.dll
........\...\...\.....\DAL.pdb
........\...\...\Release
........\...\obj
........\...\...\Debug
........\...\...\.....\DAL.csproj.FileListAbsolute.txt
........\...\...\.....\DAL.dll
........\...\...\.....\DAL.pdb
........\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
........\...\...\.....\TempPE
........\三层架构
........\........\Program.cs
........\........\Properties
........\........\..........\AssemblyInfo.cs
........\........\..........\Resources.Designer.cs
........\........\..........\Resources.resx
........\........\..........\Settings.Designer.cs
........\........\..........\Settings.settings
........\........\UIL_三层架构.csproj
........\........\bin
........\........\...\Debug
........\........\...\.....\BLL.dll
........\........\...\.....\BLL.pdb
........\........\...\.....\DAL.dll
........\........\...\.....\DAL.pdb
........\........\...\.....\三层架构.exe
........\........\...\.....\三层架构.pdb
........\........\...\.....\三层架构.vshost.exe
........\........\...\.....\三层架构.vshost.exe.manifest
........\........\...\Release
........\........\obj
........\........\...\x86
........\........\...\...\Debug
........\........\...\...\.....\DesignTimeResolveAssemblyReferences.cache
........\........\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
........\........\...\...\.....\GenerateResource.read.1.tlog
........\........\...\...\.....\GenerateResource.write.1.tlog
........\........\...\...\.....\ResolveAssemblyReference.cache
........\........\...\...\.....\TempPE
........\........\...\...\.....\UIL_三层架构.csproj.FileListAbsolute.txt
........\........\...\...\.....\三层架构.Properties.Resources.resources
........\........\...\...\.....\三层架构.csproj.FileListAbsolute.txt
........\........\...\...\.....\三层架构.exe
........\........\...\...\.....\三层架构.pdb
........\........\...\...\.....\三层架构.用户名查询.resources
........\........\用户名查询.Designer.cs
........\........\用户名查询.cs
........\........\用户名查询.resx
........\三层架构.sln
........\三层架构.suo