Three-tier system with users log in to write a simple example for the C# Beginners

Packet : 33753171jiagou.rar filelist
Bll\Bll.csproj
Bll\cl_frmLand_Bll.cs
Bll\obj\Bll.csproj.FileList.txt
Bll\Properties\AssemblyInfo.cs
DAl\Cl_stuland_DAl.cs
DAl\Conn.cs
DAl\DAl.csproj
DAl\obj\DAl.csproj.FileList.txt
DAl\Properties\AssemblyInfo.cs
Model\Cl_stuland.cs
Model\Model.csproj
Model\obj\Model.csproj.FileList.txt
Model\Properties\AssemblyInfo.cs
WindowsApplication1\frmLand.cs
WindowsApplication1\frmLand.Designer.cs
WindowsApplication1\frmLand.resx
WindowsApplication1\obj\WindowsApplication1.csproj.FileList.txt
WindowsApplication1\Program.cs
WindowsApplication1\Properties\AssemblyInfo.cs
WindowsApplication1\Properties\Resources.Designer.cs
WindowsApplication1\Properties\Resources.resx
WindowsApplication1\Properties\Settings.Designer.cs
WindowsApplication1\Properties\Settings.settings
WindowsApplication1\WindowsApplication1.csproj
WindowsApplication1.sln
WindowsApplication1.suo
Bll\bin\Debug
Bll\obj\Debug
DAl\bin\Debug
DAl\obj\Debug
Model\bin\Debug
Model\obj\Debug
WindowsApplication1\bin\Debug
WindowsApplication1\obj\Debug
Bll\bin
Bll\obj
Bll\Properties
DAl\bin
DAl\obj
DAl\Properties
Model\bin
Model\obj
Model\Properties
WindowsApplication1\bin
WindowsApplication1\obj
WindowsApplication1\Properties
Bll
DAl
Model
WindowsApplication1

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