How to read and write SQL database. In the. NET development environment. Written in C#

实例121 如何直接操作主从关系表\App.ico
..............................\AssemblyInfo.cs
..............................\CustomerDS.Designer.cs
..............................\CustomerDS.xsc
..............................\CustomerDS.xsd
..............................\CustomerOrderDS.Designer.cs
..............................\CustomerOrderDS.xsc
..............................\CustomerOrderDS.xsd
..............................\CustomerOrderDS.xsx
..............................\Form1.cs
..............................\Form1.resx
..............................\MyDB.csproj
..............................\MyDB.csproj.user
..............................\MyDB.sln
..............................\MyDB.suo
..............................\Northwind.mdb
..............................\OrderDS.Designer.cs
..............................\OrderDS.xsc
..............................\OrderDS.xsd
..............................\UpgradeLog.XML
..............................\_UpgradeReport_Files\UpgradeReport.css
..............................\....................\UpgradeReport.xslt
..............................\....................\UpgradeReport_Minus.gif
..............................\....................\UpgradeReport_Plus.gif
..............................\obj\MyDB.csproj.FileListAbsolute.txt
..............................\...\Release\MyDB.csproj.GenerateResource.Cache
..............................\...\.......\MyDB.exe
..............................\...\.......\MyDB.Form1.resources
..............................\...\.......\MyDB.projdata
..............................\...\.......\TempPE\CustomerDS.cs.dll
..............................\...\.......\......\CustomerDS.Designer.cs.dll
..............................\...\.......\......\CustomerOrderDS.cs.dll
..............................\...\.......\......\CustomerOrderDS.Designer.cs.dll
..............................\...\.......\......\OrderDS.cs.dll
..............................\...\.......\......\OrderDS.Designer.cs.dll
..............................\bin\Release\MyDB.exe
..............................\...\.......\MyDB.vshost.exe
..............................\...\.......\Northwind.mdb
..............................\Backup\App.ico
..............................\......\AssemblyInfo.cs
..............................\......\CustomerDS.cs
..............................\......\CustomerDS.xsd
..............................\......\CustomerOrderDS.cs
..............................\......\CustomerOrderDS.xsd
..............................\......\CustomerOrderDS.xsx
..............................\......\Form1.cs
..............................\......\Form1.resx
..............................\......\MyDB.csproj
..............................\......\MyDB.csproj.user
..............................\......\MyDB.sln
..............................\......\MyDB.suo
..............................\......\OrderDS.cs
..............................\......\OrderDS.xsd
..............................\obj\Debug\TempPE
..............................\...\Release\temp
..............................\...\.......\TempPE
..............................\...\Debug
..............................\...\Release
..............................\bin\Debug
..............................\...\Release
..............................\_UpgradeReport_Files
..............................\obj
..............................\bin
..............................\Backup
实例121 如何直接操作主从关系表

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