ThreeLayerDemo

代码说明：

说明：  数据库连接典型三层结构，用于初学者了解数据库连接和存储(A typical three-tier structure of the database connection, for beginners to understand the database connectivity and storage)

文件列表：

ThreeLayerDemo
ThreeLayerDemo\Code
ThreeLayerDemo\Code\ThreeLayerDemo
ThreeLayerDemo\Code\ThreeLayerDemo\app.config
ThreeLayerDemo\Code\ThreeLayerDemo\bin
ThreeLayerDemo\Code\ThreeLayerDemo\bin\Debug
ThreeLayerDemo\Code\ThreeLayerDemo\bin\Debug\ThreeLayerDemo.exe
ThreeLayerDemo\Code\ThreeLayerDemo\bin\Debug\ThreeLayerDemo.exe.config
ThreeLayerDemo\Code\ThreeLayerDemo\bin\Debug\ThreeLayerDemo.vshost.exe
ThreeLayerDemo\Code\ThreeLayerDemo\bin\Debug\ThreeLayerDemo.vshost.exe.config
ThreeLayerDemo\Code\ThreeLayerDemo\BUS
ThreeLayerDemo\Code\ThreeLayerDemo\BUS\userBUS.cs
ThreeLayerDemo\Code\ThreeLayerDemo\DAO
ThreeLayerDemo\Code\ThreeLayerDemo\DAO\userDAO.cs
ThreeLayerDemo\Code\ThreeLayerDemo\dbConnection.cs
ThreeLayerDemo\Code\ThreeLayerDemo\frmLogin.cs
ThreeLayerDemo\Code\ThreeLayerDemo\frmLogin.Designer.cs
ThreeLayerDemo\Code\ThreeLayerDemo\frmLogin.resx
ThreeLayerDemo\Code\ThreeLayerDemo\Program.cs
ThreeLayerDemo\Code\ThreeLayerDemo\Properties
ThreeLayerDemo\Code\ThreeLayerDemo\Properties\AssemblyInfo.cs
ThreeLayerDemo\Code\ThreeLayerDemo\Properties\Resources.Designer.cs
ThreeLayerDemo\Code\ThreeLayerDemo\Properties\Resources.resx
ThreeLayerDemo\Code\ThreeLayerDemo\Properties\Settings.Designer.cs
ThreeLayerDemo\Code\ThreeLayerDemo\Properties\Settings.settings
ThreeLayerDemo\Code\ThreeLayerDemo\ThreeLayerDemo.csproj
ThreeLayerDemo\Code\ThreeLayerDemo\ThreeLayerDemo.csproj.user
ThreeLayerDemo\Code\ThreeLayerDemo\VO
ThreeLayerDemo\Code\ThreeLayerDemo\VO\userVO.cs
ThreeLayerDemo\Code\ThreeLayerDemo.sln
ThreeLayerDemo\Code\ThreeLayerDemo.suo