c#Form窗体增删改操作

C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\Database1.mdf C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\Database1_log.ldf C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe.config C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\bill.dll C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\sql.dll C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\sql.pdb C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\bill.pdb C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\ResolveAssemblyReference.cache C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Form1.resources C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Properties.Resources.resources C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.GenerateResource.Cache C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.exe C:\Documents and Settings\tyc\桌面\two\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.pdb D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe.config D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.exe D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.pdb D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\bill.dll D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\sql.dll D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\sql.pdb D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\bill.pdb D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\ResolveAssemblyReference.cache D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Form1.resources D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Properties.Resources.resources D:\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.GenerateResource.Cache D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe.config D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.exe D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.pdb D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.pdb D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\bill.dll D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\sql.dll D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\sql.pdb D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\bill.pdb D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\ResolveAssemblyReference.cache D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Form1.resources D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.Properties.Resources.resources D:\C#开发实例\Form增删改操作\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.csproj.GenerateResource.Cache