C#+ purchasing system+ three examples, suitable for junior staff to learn reference

C#+采购系统+三层实例\源码\dotNetFx35setup.exe
....................\....\Stock\BLL\AssemblyInfo.cs
....................\....\.....\...\bin\Debug\MySql.Data.dll
....................\....\.....\...\...\.....\Stock.BLL.dll
....................\....\.....\...\...\.....\Stock.BLL.pdb
....................\....\.....\...\...\.....\Stock.DAL.dll
....................\....\.....\...\...\.....\Stock.DAL.pdb
....................\....\.....\...\...\.....\Stock.DBUtility.dll
....................\....\.....\...\...\.....\Stock.DBUtility.pdb
....................\....\.....\...\...\.....\Stock.Model.dll
....................\....\.....\...\...\.....\Stock.Model.pdb
....................\....\.....\...\BLL.csproj
....................\....\.....\...\BLL.csproj.user
....................\....\.....\...\customerinfo.cs
....................\....\.....\...\emplyee.cs
....................\....\.....\...\enlist.cs
....................\....\.....\...\equipment.cs
....................\....\.....\...\indent.cs
....................\....\.....\...\invoice.cs
....................\....\.....\...\obj\Debug\BLL.csproj.FileListAbsolute.txt
....................\....\.....\...\...\.....\Refactor\Stock.BLL.dll
....................\....\.....\...\...\.....\ResolveAssemblyReference.cache
....................\....\.....\...\...\.....\Stock.BLL.dll
....................\....\.....\...\...\.....\Stock.BLL.pdb
....................\....\.....\...\providerinfo.cs
....................\....\.....\...\remit.cs
....................\....\.....\...\sub_success.cs
....................\....\.....\...\success.cs
....................\....\.....\...\type.cs
....................\....\.....\DAL\AssemblyInfo.cs
....................\....\.....\...\bin\Debug\MySql.Data.dll
....................\....\.....\...\...\.....\Stock.DAL.dll
....................\....\.....\...\...\.....\Stock.DAL.pdb
....................\....\.....\...\...\.....\Stock.DBUtility.dll
....................\....\.....\...\...\.....\Stock.DBUtility.pdb
....................\....\.....\...\...\.....\Stock.Model.dll
....................\....\.....\...\...\.....\Stock.Model.pdb
....................\....\.....\...\customerinfo.cs
....................\....\.....\...\DAL.csproj
....................\....\.....\...\DAL.csproj.user
....................\....\.....\...\emplyee.cs
....................\....\.....\...\enlist.cs
....................\....\.....\...\equipment.cs
....................\....\.....\...\indent.cs
....................\....\.....\...\invoice.cs
....................\....\.....\...\obj\Debug\DAL.csproj.FileListAbsolute.txt
....................\....\.....\...\...\.....\Refactor\Stock.DAL.dll
....................\....\.....\...\...\.....\ResolveAssemblyReference.cache
....................\....\.....\...\...\.....\Stock.DAL.dll
....................\....\.....\...\...\.....\Stock.DAL.pdb
....................\....\.....\...\providerinfo.cs
....................\....\.....\...\remit.cs
....................\....\.....\...\sub_success.cs
....................\....\.....\...\success.cs
....................\....\.....\...\type.cs
....................\....\.....\.BUtility\AssemblyInfo.cs
....................\....\.....\.........\bin\Debug\MySql.Data.dll
....................\....\.....\.........\...\.....\Stock.DBUtility.dll
....................\....\.....\.........\...\.....\Stock.DBUtility.pdb
....................\....\.....\.........\CommandInfo.cs
....................\....\.....\.........\DbHelperMySQL.cs
....................\....\.....\.........\DbHelperOleDb.cs
....................\....\.....\.........\DbHelperOra.cs
....................\....\.....\.........\DbHelperSQL.cs
....................\....\.....\.........\DbHelperSQL2.cs
....................\....\.....\.........\DbHelperSQLP.cs
....................\....\.....\.........\DBUtility.csproj
....................\....\.....\.........\DBUtility.csproj.user
....................\....\.....\.........\DESEncrypt.cs
....................\....\.....\.........\obj\Debug\DBUtility.csproj.FileListAbsolute.txt
....................\....\.....\.........\...\.....\Refactor\Stock.

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