c#中简单三层架构实例

C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\BookShop.exe C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\BookShop.pdb C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\ResolveAssemblyReference.cache C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.Properties.Resources.resources C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.csproj.GenerateResource.Cache C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.exe C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.pdb C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\BookShop.exe.config C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.frm_Login.resources C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_BLL.dll C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_DAL.dll C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_DbSqlHelp.dll C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_DAL.pdb C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_DbSqlHelp.pdb C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_BLL.pdb C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_Model.dll C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\bin\Debug\Book_Model.pdb C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.frm_Main.resources C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.frm_Book.resources C:\Documents and Settings\Administrator\桌面\Demo\BookShop\BookShop\obj\Debug\BookShop.frm_car.resources