A three-tier architecture to connect to the database statement placed in the configuration file version, very useful for beginners

HotelManage三层架构数据库连接语句放置在配置文件中版本
.....................................................\HotelManage
.....................................................\HotelManage.sln
.....................................................\HotelManage.suo
.....................................................\HotelManageBLL
.....................................................\..............\bin
.....................................................\..............\...\Debug
.....................................................\..............\...\.....\HotelManageBLL.dll
.....................................................\..............\...\.....\HotelManageBLL.pdb
.....................................................\..............\...\.....\HotelManageDAL.dll
.....................................................\..............\...\.....\HotelManageDAL.pdb
.....................................................\..............\...\.....\HotelManageModels.dll
.....................................................\..............\...\.....\HotelManageModels.pdb
.....................................................\..............\...\Release
.....................................................\..............\HotelManageBLL.csproj
.....................................................\..............\HotelManageBLL.csproj.user
.....................................................\..............\obj
.....................................................\..............\...\Debug
.....................................................\..............\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
.....................................................\..............\...\.....\HotelManageBLL.dll
.....................................................\..............\...\.....\HotelManageBLL.pdb
.....................................................\..............\...\.....\Refactor
.....................................................\..............\...\.....\........\HotelManageBLL.dll
.....................................................\..............\...\.....\ResolveAssemblyReference.cache
.....................................................\..............\...\.....\TempPE
.....................................................\..............\...\HotelManageBLL.csproj.FileList.txt
.....................................................\..............\Properties
.....................................................\..............\..........\AssemblyInfo.cs
.....................................................\..............\RoomManage.cs
.....................................................\..............\RoomTypeManager.cs
.....................................................\HotelManageDAL
.....................................................\..............\bin
.....................................................\..............\...\Debug
.....................................................\..............\...\.....\HotelManageDAL.dll
.....................................................\..............\...\.....\HotelManageDAL.pdb
.....................................................\..............\...\.....\HotelManageModels.dll
.....................................................\..............\...\.....\HotelManageModels.pdb
.....................................................\..............\...\Release
.....................................................\..............\HotelManageDAL.csproj
.....................................................\..............\HotelManageDAL.csproj.user
.....................................................\..............\obj
.....................................................\..............\...\Debug
.....................................................\..............\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
.....................................................\..............\...\.....\HotelManageDAL.dll
.....................................................\..............\...\.....\HotelManageDAL.pdb
.....................................................\..............

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