Write their own management system with the SQL connection additions and deletions to search functions

C#-酒店管理系统
...............\HotelManager
...............\............\AccessDAL
...............\............\.........\AccessDAL.csproj
...............\............\.........\AccessRoomOperatorService.cs
...............\............\.........\AccessRoomTypeOperatorService.cs
...............\............\.........\bin
...............\............\.........\...\Debug
...............\............\.........\obj
...............\............\.........\...\AccessDAL.csproj.FileList.txt
...............\............\.........\...\Debug
...............\............\.........\Properties
...............\............\.........\..........\AssemblyInfo.cs
...............\............\BLL
...............\............\...\bin
...............\............\...\...\Debug
...............\............\...\BLL.csproj
...............\............\...\obj
...............\............\...\...\BLL.csproj.FileList.txt
...............\............\...\...\Debug
...............\............\...\Properties
...............\............\...\..........\AssemblyInfo.cs
...............\............\...\RoomOperatorBLL.cs
...............\............\...\RoomTypeOperatorBLL.cs
...............\............\DBUtility
...............\............\.........\AccessHelper.cs
...............\............\.........\bin
...............\............\.........\...\Debug
...............\............\.........\DBUtility.csproj
...............\............\.........\obj
...............\............\.........\...\DBUtility.csproj.FileList.txt
...............\............\.........\...\Debug
...............\............\.........\Properties
...............\............\.........\..........\AssemblyInfo.cs
...............\............\.........\SQLHelper.cs
...............\............\Factory
...............\............\.......\AbstractFactory.cs
...............\............\.......\AccessFactory.cs
...............\............\.......\bin
...............\............\.......\...\Debug
...............\............\.......\Factory.csproj
...............\............\.......\obj
...............\............\.......\...\Debug
...............\............\.......\...\Factory.csproj.FileList.txt
...............\............\.......\Properties
...............\............\.......\..........\AssemblyInfo.cs
...............\............\.......\SQLServerFactory.cs
...............\............\HotelManager
...............\............\............\app.config
...............\............\............\bin
...............\............\............\...\Debug
...............\............\............\Database
...............\............\............\........\Create.sql
...............\............\............\frm_AboutBox.cs
...............\............\............\frm_AboutBox.Designer.cs
...............\............\............\frm_AboutBox.resx
...............\............\............\frm_MainForm.cs
...............\............\............\frm_MainForm.Designer.cs
...............\............\............\frm_MainForm.resx
...............\............\............\frm_RoomManager.cs
...............\............\............\frm_RoomManager.Designer.cs
...............\............\............\frm_RoomManager.resx
...............\............\............\frm_RoomTypeManager.cs
...............\............\............\frm_RoomTypeManager.Designer.cs
...............\............\............\frm_RoomTypeManager.resx
...............\............\............\frm_SelectDataBase.cs
...............\............\............\frm_SelectDataBase.Designer.cs
...............\............\............\frm_SelectDataBase.resx
...............\............\............\Help
...............\............\............\....\HotelManagerHelp.chm
...............\............\............\HotelManager.csproj
...............\............\............\HotelManager.csproj.user
...............\............\............\Images



...............\............\............\......\desktop_icon_01.bmp
...............\............\............\......\desktop_icon_04.bmp
...............\............\...

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