A three-tier library management system source code through the realization of a simple database to add, modify, and read a list of Sql2005 under DB database, you can just learn from the additional use of C# would like to help you! ! !

三层架构图书管理系统源码
........................\BLL
........................\...\bin
........................\...\...\Debug
........................\...\...\.....\BLL.dll
........................\...\...\.....\BLL.pdb
........................\...\...\.....\DAL.dll
........................\...\...\.....\DAL.pdb
........................\...\...\.....\PublicClass.dll
........................\...\...\.....\PublicClass.pdb
........................\...\BLL.csproj
........................\...\obj
........................\...\...\BLL.csproj.FileList.txt
........................\...\...\Debug
........................\...\...\.....\BLL.dll
........................\...\...\.....\BLL.pdb
........................\...\...\.....\Refactor
........................\...\...\.....\........\BLL.dll
........................\...\...\.....\ResolveAssemblyReference.cache
........................\...\...\.....\TempPE
........................\...\Properties
........................\...\..........\AssemblyInfo.cs
........................\...\T_Book.cs
........................\...\T_Borrow.cs
........................\...\T_Reader.cs
........................\...\T_User.cs
........................\DAL
........................\...\bin
........................\...\...\Debug
........................\...\...\.....\DAL.dll
........................\...\...\.....\DAL.pdb
........................\...\...\.....\PublicClass.dll
........................\...\...\.....\PublicClass.pdb
........................\...\DAL.csproj
........................\...\DBReader.cs
........................\...\DB_Book.cs
........................\...\DB_Borrow.cs
........................\...\DB_Reader.cs
........................\...\DB_User.cs
........................\...\obj
........................\...\...\DAL.csproj.FileList.txt
........................\...\...\Debug
........................\...\...\.....\DAL.dll
........................\...\...\.....\DAL.pdb
........................\...\...\.....\Refactor
........................\...\...\.....\........\DAL.dll
........................\...\...\.....\ResolveAssemblyReference.cache
........................\...\...\.....\TempPE
........................\...\Properties
........................\...\..........\AssemblyInfo.cs
........................\...\SqlConnStr.cs
........................\...\SqlHelper.cs
........................\...\V_BORROW.cs
........................\DB
........................\..\lib_Data.MDF
........................\..\lib_Log.LDF
........................\PublicClass
........................\...........\bin
........................\...........\...\Debug
........................\...........\...\.....\PublicClass.dll
........................\...........\...\.....\PublicClass.pdb
........................\...........\BookModel.cs
........................\...........\BorrowModel.cs
........................\...........\obj
........................\...........\...\Debug
........................\...........\...\.....\PublicClass.dll
........................\...........\...\.....\PublicClass.pdb
........................\...........\...\.....\Refactor
........................\...........\...\.....\........\PublicClass.dll
........................\...........\...\.....\TempPE
........................\...........\...\PublicClass.csproj.FileList.txt
........................\...........\Properties
........................\...........\..........\AssemblyInfo.cs
........................\...........\PublicClass.csproj
........................\...........\ReaderModel.cs
........................\...........\UserModel.cs
........................\UI
........................\..\App_Data
........................\..\Bin
........................\..\...\BLL.dll
........................\..\...\BLL.pdb
........................\..\...\DAL.dll
........................\..\...\DAL.pdb
........................\..\...\PublicClass.dll
........................\..\...\PublicClass.pdb
........................\..\BookAdd.aspx
........................\..\BookAdd.aspx.cs
........................\..\BookDetail.aspx
........................\..\BookDet

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