(四)提取数据库信息的效果

    技术2022-05-11  98

    Author:水如烟

    通过以下代码来提取数据库信息:

    Public   Class  Form1     Dim  DbBuilder  As  DbBuilder  =   New  Sql9Builder( " Data Source=./SQLExpress;Integrated Security=True " )     Private   Sub  Button2_Click( ByVal  sender  As  System.Object,  ByVal  e  As  System.EventArgs)  Handles  Button2.Click        GetDatabaseInfo( " AdventureWorks " )     End Sub      Private   Sub  Button3_Click( ByVal  sender  As  System.Object,  ByVal  e  As  System.EventArgs)  Handles  Button3.Click        GetDatabaseInfo( " Northwind " )     End Sub      Private   Sub  GetDatabaseInfo( ByVal  database  As   String )        DbBuilder.ReadInfoFrom(database)         ' 枚举类          Dim  file  As   New  IO.StreamWriter(DbBuilder.Catalog.Name  &   " .vb " False , System.Text.Encoding.Default)         With  file            .WriteLine(DbBuilder.GetAttrCatalogString)             For   Each  t  As  TableInfoBase  In  DbBuilder.Catalog.Tables.Values                .WriteLine(DbBuilder.GetEnumTableString(t.FullName))             Next             .Flush()            .Close()            .Dispose()         End   With          ' 实体类         file  =   New  IO.StreamWriter(DbBuilder.Catalog.Name  &   " Class.vb " False , System.Text.Encoding.Default)         With  file             For   Each  t  As  TableInfoBase  In  DbBuilder.Catalog.Tables.Values                .WriteLine(DbBuilder.GetClassTableString(t.FullName))             Next             .Flush()            .Close()            .Dispose()         End   With         Console.WriteLine( " Finish " )     End Sub      Private   Sub  Button1_Click( ByVal  sender  As  System.Object,  ByVal  e  As  System.EventArgs)  Handles  Button1.Click         Dim  ass  As  Reflection.Assembly  =  Reflection.Assembly.LoadFrom( " DatabaseBuilderApplication.exe " )        DbBuilder.ReadInfoFrom(ass)         ' 查询器使用的SQL脚本          Dim  file  As   New  IO.StreamWriter(DbBuilder.Catalog.Name  &   " .sql " False , System.Text.Encoding.Default)         With  file            .WriteLine(DbBuilder.GetAllScript)            .Flush()            .Close()            .Dispose()         End   With      End Sub End Class

    提取到的Northwind信息如下:枚举类,

     

    < Assembly : AssemblySql9Catalog(Name: = " Northwind " ,Server: = " ./SQLExpress " ) > < Sql9Table(Name: = " Categories " ,Schema: = " dbo " ) >  _ Public   Enum  Categories     < Sql9int(Name: = " CategoryID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _    [CategoryID]     < Sql9nvarchar(Name: = " CategoryName " ,IsNullable: = False ,Length: = 15 ) >  _    [CategoryName]     < Sql9ntext(Name: = " Description " ) >  _    [Description]     < Sql9image(Name: = " Picture " ) >  _    [Picture] End Enum < Sql9Table(Name: = " CustomerCustomerDemo " ,Schema: = " dbo " ) >  _ Public   Enum  CustomerCustomerDemo     < Sql9nchar(Name: = " CustomerID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 5 ) >  _    [CustomerID]     < Sql9nchar(Name: = " CustomerTypeID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 10 ) >  _    [CustomerTypeID] End Enum < Sql9Table(Name: = " CustomerDemographics " ,Schema: = " dbo " ) >  _ Public   Enum  CustomerDemographics     < Sql9nchar(Name: = " CustomerTypeID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 10 ) >  _    [CustomerTypeID]     < Sql9ntext(Name: = " CustomerDesc " ) >  _    [CustomerDesc] End Enum < Sql9Table(Name: = " Customers " ,Schema: = " dbo " ) >  _ Public   Enum  Customers     < Sql9nchar(Name: = " CustomerID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 5 ) >  _    [CustomerID]     < Sql9nvarchar(Name: = " CompanyName " ,IsNullable: = False ,Length: = 40 ) >  _    [CompanyName]     < Sql9nvarchar(Name: = " ContactName " ,Length: = 30 ) >  _    [ContactName]     < Sql9nvarchar(Name: = " ContactTitle " ,Length: = 30 ) >  _    [ContactTitle]     < Sql9nvarchar(Name: = " Address " ,Length: = 60 ) >  _    [Address]     < Sql9nvarchar(Name: = " City " ,Length: = 15 ) >  _    [City]     < Sql9nvarchar(Name: = " Region " ,Length: = 15 ) >  _    [Region]     < Sql9nvarchar(Name: = " PostalCode " ,Length: = 10 ) >  _    [PostalCode]     < Sql9nvarchar(Name: = " Country " ,Length: = 15 ) >  _    [Country]     < Sql9nvarchar(Name: = " Phone " ,Length: = 24 ) >  _    [Phone]     < Sql9nvarchar(Name: = " Fax " ,Length: = 24 ) >  _    [Fax] End Enum < Sql9Table(Name: = " Employees " ,Schema: = " dbo " ) >  _ Public   Enum  Employees     < Sql9int(Name: = " EmployeeID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _    [EmployeeID]     < Sql9nvarchar(Name: = " LastName " ,IsNullable: = False ,Length: = 20 ) >  _    [LastName]     < Sql9nvarchar(Name: = " FirstName " ,IsNullable: = False ,Length: = 10 ) >  _    [FirstName]     < Sql9nvarchar(Name: = " Title " ,Length: = 30 ) >  _    [Title]     < Sql9nvarchar(Name: = " TitleOfCourtesy " ,Length: = 25 ) >  _    [TitleOfCourtesy]     < Sql9datetime(Name: = " BirthDate " ) >  _    [BirthDate]     < Sql9datetime(Name: = " HireDate " ) >  _    [HireDate]     < Sql9nvarchar(Name: = " Address " ,Length: = 60 ) >  _    [Address]     < Sql9nvarchar(Name: = " City " ,Length: = 15 ) >  _    [City]     < Sql9nvarchar(Name: = " Region " ,Length: = 15 ) >  _    [Region]     < Sql9nvarchar(Name: = " PostalCode " ,Length: = 10 ) >  _    [PostalCode]     < Sql9nvarchar(Name: = " Country " ,Length: = 15 ) >  _    [Country]     < Sql9nvarchar(Name: = " HomePhone " ,Length: = 24 ) >  _    [HomePhone]     < Sql9nvarchar(Name: = " Extension " ,Length: = 4 ) >  _    [Extension]     < Sql9image(Name: = " Photo " ) >  _    [Photo]     < Sql9ntext(Name: = " Notes " ) >  _    [Notes]     < Sql9int(Name: = " ReportsTo " ) >  _    [ReportsTo]     < Sql9nvarchar(Name: = " PhotoPath " ,Length: = 255 ) >  _    [PhotoPath] End Enum < Sql9Table(Name: = " EmployeeTerritories " ,Schema: = " dbo " ) >  _ Public   Enum  EmployeeTerritories     < Sql9int(Name: = " EmployeeID " ,IsPrimary: = True ,IsNullable: = False ) >  _    [EmployeeID]     < Sql9nvarchar(Name: = " TerritoryID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 20 ) >  _    [TerritoryID] End Enum < Sql9Table(Name: = " Order Details " ,Schema: = " dbo " ) >  _ Public   Enum  Order_Details     < Sql9int(Name: = " OrderID " ,IsPrimary: = True ,IsNullable: = False ) >  _    [OrderID]     < Sql9int(Name: = " ProductID " ,IsPrimary: = True ,IsNullable: = False ) >  _    [ProductID]     < Sql9money(Name: = " UnitPrice " ,IsNullable: = False ,DefaultOrBinding: = " ((0)) " ) >  _    [UnitPrice]     < Sql9smallint(Name: = " Quantity " ,IsNullable: = False ,DefaultOrBinding: = " ((1)) " ) >  _    [Quantity]     < Sql9real(Name: = " Discount " ,IsNullable: = False ,DefaultOrBinding: = " ((0)) " ) >  _    [Discount] End Enum < Sql9Table(Name: = " Orders " ,Schema: = " dbo " ) >  _ Public   Enum  Orders     < Sql9int(Name: = " OrderID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _    [OrderID]     < Sql9nchar(Name: = " CustomerID " ,Length: = 5 ) >  _    [CustomerID]     < Sql9int(Name: = " EmployeeID " ) >  _    [EmployeeID]     < Sql9datetime(Name: = " OrderDate " ) >  _    [OrderDate]     < Sql9datetime(Name: = " RequiredDate " ) >  _    [RequiredDate]     < Sql9datetime(Name: = " ShippedDate " ) >  _    [ShippedDate]     < Sql9int(Name: = " ShipVia " ) >  _    [ShipVia]     < Sql9money(Name: = " Freight " ,DefaultOrBinding: = " ((0)) " ) >  _    [Freight]     < Sql9nvarchar(Name: = " ShipName " ,Length: = 40 ) >  _    [ShipName]     < Sql9nvarchar(Name: = " ShipAddress " ,Length: = 60 ) >  _    [ShipAddress]     < Sql9nvarchar(Name: = " ShipCity " ,Length: = 15 ) >  _    [ShipCity]     < Sql9nvarchar(Name: = " ShipRegion " ,Length: = 15 ) >  _    [ShipRegion]     < Sql9nvarchar(Name: = " ShipPostalCode " ,Length: = 10 ) >  _    [ShipPostalCode]     < Sql9nvarchar(Name: = " ShipCountry " ,Length: = 15 ) >  _    [ShipCountry] End Enum < Sql9Table(Name: = " Products " ,Schema: = " dbo " ) >  _ Public   Enum  Products     < Sql9int(Name: = " ProductID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _    [ProductID]     < Sql9nvarchar(Name: = " ProductName " ,IsNullable: = False ,Length: = 40 ) >  _    [ProductName]     < Sql9int(Name: = " SupplierID " ) >  _    [SupplierID]     < Sql9int(Name: = " CategoryID " ) >  _    [CategoryID]     < Sql9nvarchar(Name: = " QuantityPerUnit " ,Length: = 20 ) >  _    [QuantityPerUnit]     < Sql9money(Name: = " UnitPrice " ,DefaultOrBinding: = " ((0)) " ) >  _    [UnitPrice]     < Sql9smallint(Name: = " UnitsInStock " ,DefaultOrBinding: = " ((0)) " ) >  _    [UnitsInStock]     < Sql9smallint(Name: = " UnitsOnOrder " ,DefaultOrBinding: = " ((0)) " ) >  _    [UnitsOnOrder]     < Sql9smallint(Name: = " ReorderLevel " ,DefaultOrBinding: = " ((0)) " ) >  _    [ReorderLevel]     < Sql9bit(Name: = " Discontinued " ,IsNullable: = False ,DefaultOrBinding: = " ((0)) " ) >  _    [Discontinued] End Enum < Sql9Table(Name: = " Region " ,Schema: = " dbo " ) >  _ Public   Enum  Region     < Sql9int(Name: = " RegionID " ,IsPrimary: = True ,IsNullable: = False ) >  _    [RegionID]     < Sql9nchar(Name: = " RegionDescription " ,IsNullable: = False ,Length: = 50 ) >  _    [RegionDescription] End Enum < Sql9Table(Name: = " Shippers " ,Schema: = " dbo " ) >  _ Public   Enum  Shippers     < Sql9int(Name: = " ShipperID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _    [ShipperID]     < Sql9nvarchar(Name: = " CompanyName " ,IsNullable: = False ,Length: = 40 ) >  _    [CompanyName]     < Sql9nvarchar(Name: = " Phone " ,Length: = 24 ) >  _    [Phone] End Enum < Sql9Table(Name: = " Suppliers " ,Schema: = " dbo " ) >  _ Public   Enum  Suppliers     < Sql9int(Name: = " SupplierID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _    [SupplierID]     < Sql9nvarchar(Name: = " CompanyName " ,IsNullable: = False ,Length: = 40 ) >  _    [CompanyName]     < Sql9nvarchar(Name: = " ContactName " ,Length: = 30 ) >  _    [ContactName]     < Sql9nvarchar(Name: = " ContactTitle " ,Length: = 30 ) >  _    [ContactTitle]     < Sql9nvarchar(Name: = " Address " ,Length: = 60 ) >  _    [Address]     < Sql9nvarchar(Name: = " City " ,Length: = 15 ) >  _    [City]     < Sql9nvarchar(Name: = " Region " ,Length: = 15 ) >  _    [Region]     < Sql9nvarchar(Name: = " PostalCode " ,Length: = 10 ) >  _    [PostalCode]     < Sql9nvarchar(Name: = " Country " ,Length: = 15 ) >  _    [Country]     < Sql9nvarchar(Name: = " Phone " ,Length: = 24 ) >  _    [Phone]     < Sql9nvarchar(Name: = " Fax " ,Length: = 24 ) >  _    [Fax]     < Sql9ntext(Name: = " HomePage " ) >  _    [HomePage] End Enum < Sql9Table(Name: = " Territories " ,Schema: = " dbo " ) >  _ Public   Enum  Territories     < Sql9nvarchar(Name: = " TerritoryID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 20 ) >  _    [TerritoryID]     < Sql9nchar(Name: = " TerritoryDescription " ,IsNullable: = False ,Length: = 50 ) >  _    [TerritoryDescription]     < Sql9int(Name: = " RegionID " ,IsNullable: = False ) >  _    [RegionID] End Enum

    实体类.

     

    < Sql9Table(Name: = " Categories " ,Schema: = " dbo " ) >  _ Public   Class  CategoriesClass     Private  gCategoryID  As  Int32     Private  gCategoryName  As   String      Private  gDescription  As   String      Private  gPicture  As   Byte ()     < Sql9int(Name: = " CategoryID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _     Public   Property  [CategoryID]()  As  Int32         Get              Return  gCategoryID         End   Get          Set ( ByVal  value  As  Int32)            gCategoryID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " CategoryName " ,IsNullable: = False ,Length: = 15 ) >  _     Public   Property  [CategoryName]()  As   String          Get              Return  gCategoryName         End   Get          Set ( ByVal  value  As   String )            gCategoryName  =  value         End   Set      End Property      < Sql9ntext(Name: = " Description " ) >  _     Public   Property  [Description]()  As   String          Get              Return  gDescription         End   Get          Set ( ByVal  value  As   String )            gDescription  =  value         End   Set      End Property      < Sql9image(Name: = " Picture " ) >  _     Public   Property  [Picture]()  As   Byte ()         Get              Return  gPicture         End   Get          Set ( ByVal  value  As   Byte ())            gPicture  =  value         End   Set      End Property End Class < Sql9Table(Name: = " CustomerCustomerDemo " ,Schema: = " dbo " ) >  _ Public   Class  CustomerCustomerDemoClass     Private  gCustomerID  As   String      Private  gCustomerTypeID  As   String      < Sql9nchar(Name: = " CustomerID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 5 ) >  _     Public   Property  [CustomerID]()  As   String          Get              Return  gCustomerID         End   Get          Set ( ByVal  value  As   String )            gCustomerID  =  value         End   Set      End Property      < Sql9nchar(Name: = " CustomerTypeID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 10 ) >  _     Public   Property  [CustomerTypeID]()  As   String          Get              Return  gCustomerTypeID         End   Get          Set ( ByVal  value  As   String )            gCustomerTypeID  =  value         End   Set      End Property End Class < Sql9Table(Name: = " CustomerDemographics " ,Schema: = " dbo " ) >  _ Public   Class  CustomerDemographicsClass     Private  gCustomerTypeID  As   String      Private  gCustomerDesc  As   String      < Sql9nchar(Name: = " CustomerTypeID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 10 ) >  _     Public   Property  [CustomerTypeID]()  As   String          Get              Return  gCustomerTypeID         End   Get          Set ( ByVal  value  As   String )            gCustomerTypeID  =  value         End   Set      End Property      < Sql9ntext(Name: = " CustomerDesc " ) >  _     Public   Property  [CustomerDesc]()  As   String          Get              Return  gCustomerDesc         End   Get          Set ( ByVal  value  As   String )            gCustomerDesc  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Customers " ,Schema: = " dbo " ) >  _ Public   Class  CustomersClass     Private  gCustomerID  As   String      Private  gCompanyName  As   String      Private  gContactName  As   String      Private  gContactTitle  As   String      Private  gAddress  As   String      Private  gCity  As   String      Private  gRegion  As   String      Private  gPostalCode  As   String      Private  gCountry  As   String      Private  gPhone  As   String      Private  gFax  As   String      < Sql9nchar(Name: = " CustomerID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 5 ) >  _     Public   Property  [CustomerID]()  As   String          Get              Return  gCustomerID         End   Get          Set ( ByVal  value  As   String )            gCustomerID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " CompanyName " ,IsNullable: = False ,Length: = 40 ) >  _     Public   Property  [CompanyName]()  As   String          Get              Return  gCompanyName         End   Get          Set ( ByVal  value  As   String )            gCompanyName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ContactName " ,Length: = 30 ) >  _     Public   Property  [ContactName]()  As   String          Get              Return  gContactName         End   Get          Set ( ByVal  value  As   String )            gContactName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ContactTitle " ,Length: = 30 ) >  _     Public   Property  [ContactTitle]()  As   String          Get              Return  gContactTitle         End   Get          Set ( ByVal  value  As   String )            gContactTitle  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Address " ,Length: = 60 ) >  _     Public   Property  [Address]()  As   String          Get              Return  gAddress         End   Get          Set ( ByVal  value  As   String )            gAddress  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " City " ,Length: = 15 ) >  _     Public   Property  [City]()  As   String          Get              Return  gCity         End   Get          Set ( ByVal  value  As   String )            gCity  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Region " ,Length: = 15 ) >  _     Public   Property  [Region]()  As   String          Get              Return  gRegion         End   Get          Set ( ByVal  value  As   String )            gRegion  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " PostalCode " ,Length: = 10 ) >  _     Public   Property  [PostalCode]()  As   String          Get              Return  gPostalCode         End   Get          Set ( ByVal  value  As   String )            gPostalCode  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Country " ,Length: = 15 ) >  _     Public   Property  [Country]()  As   String          Get              Return  gCountry         End   Get          Set ( ByVal  value  As   String )            gCountry  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Phone " ,Length: = 24 ) >  _     Public   Property  [Phone]()  As   String          Get              Return  gPhone         End   Get          Set ( ByVal  value  As   String )            gPhone  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Fax " ,Length: = 24 ) >  _     Public   Property  [Fax]()  As   String          Get              Return  gFax         End   Get          Set ( ByVal  value  As   String )            gFax  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Employees " ,Schema: = " dbo " ) >  _ Public   Class  EmployeesClass     Private  gEmployeeID  As  Int32     Private  gLastName  As   String      Private  gFirstName  As   String      Private  gTitle  As   String      Private  gTitleOfCourtesy  As   String      Private  gBirthDate  As  DateTime     Private  gHireDate  As  DateTime     Private  gAddress  As   String      Private  gCity  As   String      Private  gRegion  As   String      Private  gPostalCode  As   String      Private  gCountry  As   String      Private  gHomePhone  As   String      Private  gExtension  As   String      Private  gPhoto  As   Byte ()     Private  gNotes  As   String      Private  gReportsTo  As  Int32     Private  gPhotoPath  As   String      < Sql9int(Name: = " EmployeeID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _     Public   Property  [EmployeeID]()  As  Int32         Get              Return  gEmployeeID         End   Get          Set ( ByVal  value  As  Int32)            gEmployeeID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " LastName " ,IsNullable: = False ,Length: = 20 ) >  _     Public   Property  [LastName]()  As   String          Get              Return  gLastName         End   Get          Set ( ByVal  value  As   String )            gLastName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " FirstName " ,IsNullable: = False ,Length: = 10 ) >  _     Public   Property  [FirstName]()  As   String          Get              Return  gFirstName         End   Get          Set ( ByVal  value  As   String )            gFirstName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Title " ,Length: = 30 ) >  _     Public   Property  [Title]()  As   String          Get              Return  gTitle         End   Get          Set ( ByVal  value  As   String )            gTitle  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " TitleOfCourtesy " ,Length: = 25 ) >  _     Public   Property  [TitleOfCourtesy]()  As   String          Get              Return  gTitleOfCourtesy         End   Get          Set ( ByVal  value  As   String )            gTitleOfCourtesy  =  value         End   Set      End Property      < Sql9datetime(Name: = " BirthDate " ) >  _     Public   Property  [BirthDate]()  As  DateTime         Get              Return  gBirthDate         End   Get          Set ( ByVal  value  As  DateTime)            gBirthDate  =  value         End   Set      End Property      < Sql9datetime(Name: = " HireDate " ) >  _     Public   Property  [HireDate]()  As  DateTime         Get              Return  gHireDate         End   Get          Set ( ByVal  value  As  DateTime)            gHireDate  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Address " ,Length: = 60 ) >  _     Public   Property  [Address]()  As   String          Get              Return  gAddress         End   Get          Set ( ByVal  value  As   String )            gAddress  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " City " ,Length: = 15 ) >  _     Public   Property  [City]()  As   String          Get              Return  gCity         End   Get          Set ( ByVal  value  As   String )            gCity  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Region " ,Length: = 15 ) >  _     Public   Property  [Region]()  As   String          Get              Return  gRegion         End   Get          Set ( ByVal  value  As   String )            gRegion  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " PostalCode " ,Length: = 10 ) >  _     Public   Property  [PostalCode]()  As   String          Get              Return  gPostalCode         End   Get          Set ( ByVal  value  As   String )            gPostalCode  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Country " ,Length: = 15 ) >  _     Public   Property  [Country]()  As   String          Get              Return  gCountry         End   Get          Set ( ByVal  value  As   String )            gCountry  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " HomePhone " ,Length: = 24 ) >  _     Public   Property  [HomePhone]()  As   String          Get              Return  gHomePhone         End   Get          Set ( ByVal  value  As   String )            gHomePhone  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Extension " ,Length: = 4 ) >  _     Public   Property  [Extension]()  As   String          Get              Return  gExtension         End   Get          Set ( ByVal  value  As   String )            gExtension  =  value         End   Set      End Property      < Sql9image(Name: = " Photo " ) >  _     Public   Property  [Photo]()  As   Byte ()         Get              Return  gPhoto         End   Get          Set ( ByVal  value  As   Byte ())            gPhoto  =  value         End   Set      End Property      < Sql9ntext(Name: = " Notes " ) >  _     Public   Property  [Notes]()  As   String          Get              Return  gNotes         End   Get          Set ( ByVal  value  As   String )            gNotes  =  value         End   Set      End Property      < Sql9int(Name: = " ReportsTo " ) >  _     Public   Property  [ReportsTo]()  As  Int32         Get              Return  gReportsTo         End   Get          Set ( ByVal  value  As  Int32)            gReportsTo  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " PhotoPath " ,Length: = 255 ) >  _     Public   Property  [PhotoPath]()  As   String          Get              Return  gPhotoPath         End   Get          Set ( ByVal  value  As   String )            gPhotoPath  =  value         End   Set      End Property End Class < Sql9Table(Name: = " EmployeeTerritories " ,Schema: = " dbo " ) >  _ Public   Class  EmployeeTerritoriesClass     Private  gEmployeeID  As  Int32     Private  gTerritoryID  As   String      < Sql9int(Name: = " EmployeeID " ,IsPrimary: = True ,IsNullable: = False ) >  _     Public   Property  [EmployeeID]()  As  Int32         Get              Return  gEmployeeID         End   Get          Set ( ByVal  value  As  Int32)            gEmployeeID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " TerritoryID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 20 ) >  _     Public   Property  [TerritoryID]()  As   String          Get              Return  gTerritoryID         End   Get          Set ( ByVal  value  As   String )            gTerritoryID  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Order Details " ,Schema: = " dbo " ) >  _ Public   Class  Order_DetailsClass     Private  gOrderID  As  Int32     Private  gProductID  As  Int32     Private  gUnitPrice  As   Decimal      Private  gQuantity  As  Int16     Private  gDiscount  As   Single      < Sql9int(Name: = " OrderID " ,IsPrimary: = True ,IsNullable: = False ) >  _     Public   Property  [OrderID]()  As  Int32         Get              Return  gOrderID         End   Get          Set ( ByVal  value  As  Int32)            gOrderID  =  value         End   Set      End Property      < Sql9int(Name: = " ProductID " ,IsPrimary: = True ,IsNullable: = False ) >  _     Public   Property  [ProductID]()  As  Int32         Get              Return  gProductID         End   Get          Set ( ByVal  value  As  Int32)            gProductID  =  value         End   Set      End Property      < Sql9money(Name: = " UnitPrice " ,IsNullable: = False ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [UnitPrice]()  As   Decimal          Get              Return  gUnitPrice         End   Get          Set ( ByVal  value  As   Decimal )            gUnitPrice  =  value         End   Set      End Property      < Sql9smallint(Name: = " Quantity " ,IsNullable: = False ,DefaultOrBinding: = " ((1)) " ) >  _     Public   Property  [Quantity]()  As  Int16         Get              Return  gQuantity         End   Get          Set ( ByVal  value  As  Int16)            gQuantity  =  value         End   Set      End Property      < Sql9real(Name: = " Discount " ,IsNullable: = False ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [Discount]()  As   Single          Get              Return  gDiscount         End   Get          Set ( ByVal  value  As   Single )            gDiscount  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Orders " ,Schema: = " dbo " ) >  _ Public   Class  OrdersClass     Private  gOrderID  As  Int32     Private  gCustomerID  As   String      Private  gEmployeeID  As  Int32     Private  gOrderDate  As  DateTime     Private  gRequiredDate  As  DateTime     Private  gShippedDate  As  DateTime     Private  gShipVia  As  Int32     Private  gFreight  As   Decimal      Private  gShipName  As   String      Private  gShipAddress  As   String      Private  gShipCity  As   String      Private  gShipRegion  As   String      Private  gShipPostalCode  As   String      Private  gShipCountry  As   String      < Sql9int(Name: = " OrderID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _     Public   Property  [OrderID]()  As  Int32         Get              Return  gOrderID         End   Get          Set ( ByVal  value  As  Int32)            gOrderID  =  value         End   Set      End Property      < Sql9nchar(Name: = " CustomerID " ,Length: = 5 ) >  _     Public   Property  [CustomerID]()  As   String          Get              Return  gCustomerID         End   Get          Set ( ByVal  value  As   String )            gCustomerID  =  value         End   Set      End Property      < Sql9int(Name: = " EmployeeID " ) >  _     Public   Property  [EmployeeID]()  As  Int32         Get              Return  gEmployeeID         End   Get          Set ( ByVal  value  As  Int32)            gEmployeeID  =  value         End   Set      End Property      < Sql9datetime(Name: = " OrderDate " ) >  _     Public   Property  [OrderDate]()  As  DateTime         Get              Return  gOrderDate         End   Get          Set ( ByVal  value  As  DateTime)            gOrderDate  =  value         End   Set      End Property      < Sql9datetime(Name: = " RequiredDate " ) >  _     Public   Property  [RequiredDate]()  As  DateTime         Get              Return  gRequiredDate         End   Get          Set ( ByVal  value  As  DateTime)            gRequiredDate  =  value         End   Set      End Property      < Sql9datetime(Name: = " ShippedDate " ) >  _     Public   Property  [ShippedDate]()  As  DateTime         Get              Return  gShippedDate         End   Get          Set ( ByVal  value  As  DateTime)            gShippedDate  =  value         End   Set      End Property      < Sql9int(Name: = " ShipVia " ) >  _     Public   Property  [ShipVia]()  As  Int32         Get              Return  gShipVia         End   Get          Set ( ByVal  value  As  Int32)            gShipVia  =  value         End   Set      End Property      < Sql9money(Name: = " Freight " ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [Freight]()  As   Decimal          Get              Return  gFreight         End   Get          Set ( ByVal  value  As   Decimal )            gFreight  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ShipName " ,Length: = 40 ) >  _     Public   Property  [ShipName]()  As   String          Get              Return  gShipName         End   Get          Set ( ByVal  value  As   String )            gShipName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ShipAddress " ,Length: = 60 ) >  _     Public   Property  [ShipAddress]()  As   String          Get              Return  gShipAddress         End   Get          Set ( ByVal  value  As   String )            gShipAddress  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ShipCity " ,Length: = 15 ) >  _     Public   Property  [ShipCity]()  As   String          Get              Return  gShipCity         End   Get          Set ( ByVal  value  As   String )            gShipCity  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ShipRegion " ,Length: = 15 ) >  _     Public   Property  [ShipRegion]()  As   String          Get              Return  gShipRegion         End   Get          Set ( ByVal  value  As   String )            gShipRegion  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ShipPostalCode " ,Length: = 10 ) >  _     Public   Property  [ShipPostalCode]()  As   String          Get              Return  gShipPostalCode         End   Get          Set ( ByVal  value  As   String )            gShipPostalCode  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ShipCountry " ,Length: = 15 ) >  _     Public   Property  [ShipCountry]()  As   String          Get              Return  gShipCountry         End   Get          Set ( ByVal  value  As   String )            gShipCountry  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Products " ,Schema: = " dbo " ) >  _ Public   Class  ProductsClass     Private  gProductID  As  Int32     Private  gProductName  As   String      Private  gSupplierID  As  Int32     Private  gCategoryID  As  Int32     Private  gQuantityPerUnit  As   String      Private  gUnitPrice  As   Decimal      Private  gUnitsInStock  As  Int16     Private  gUnitsOnOrder  As  Int16     Private  gReorderLevel  As  Int16     Private  gDiscontinued  As   Boolean      < Sql9int(Name: = " ProductID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _     Public   Property  [ProductID]()  As  Int32         Get              Return  gProductID         End   Get          Set ( ByVal  value  As  Int32)            gProductID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ProductName " ,IsNullable: = False ,Length: = 40 ) >  _     Public   Property  [ProductName]()  As   String          Get              Return  gProductName         End   Get          Set ( ByVal  value  As   String )            gProductName  =  value         End   Set      End Property      < Sql9int(Name: = " SupplierID " ) >  _     Public   Property  [SupplierID]()  As  Int32         Get              Return  gSupplierID         End   Get          Set ( ByVal  value  As  Int32)            gSupplierID  =  value         End   Set      End Property      < Sql9int(Name: = " CategoryID " ) >  _     Public   Property  [CategoryID]()  As  Int32         Get              Return  gCategoryID         End   Get          Set ( ByVal  value  As  Int32)            gCategoryID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " QuantityPerUnit " ,Length: = 20 ) >  _     Public   Property  [QuantityPerUnit]()  As   String          Get              Return  gQuantityPerUnit         End   Get          Set ( ByVal  value  As   String )            gQuantityPerUnit  =  value         End   Set      End Property      < Sql9money(Name: = " UnitPrice " ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [UnitPrice]()  As   Decimal          Get              Return  gUnitPrice         End   Get          Set ( ByVal  value  As   Decimal )            gUnitPrice  =  value         End   Set      End Property      < Sql9smallint(Name: = " UnitsInStock " ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [UnitsInStock]()  As  Int16         Get              Return  gUnitsInStock         End   Get          Set ( ByVal  value  As  Int16)            gUnitsInStock  =  value         End   Set      End Property      < Sql9smallint(Name: = " UnitsOnOrder " ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [UnitsOnOrder]()  As  Int16         Get              Return  gUnitsOnOrder         End   Get          Set ( ByVal  value  As  Int16)            gUnitsOnOrder  =  value         End   Set      End Property      < Sql9smallint(Name: = " ReorderLevel " ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [ReorderLevel]()  As  Int16         Get              Return  gReorderLevel         End   Get          Set ( ByVal  value  As  Int16)            gReorderLevel  =  value         End   Set      End Property      < Sql9bit(Name: = " Discontinued " ,IsNullable: = False ,DefaultOrBinding: = " ((0)) " ) >  _     Public   Property  [Discontinued]()  As   Boolean          Get              Return  gDiscontinued         End   Get          Set ( ByVal  value  As   Boolean )            gDiscontinued  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Region " ,Schema: = " dbo " ) >  _ Public   Class  RegionClass     Private  gRegionID  As  Int32     Private  gRegionDescription  As   String      < Sql9int(Name: = " RegionID " ,IsPrimary: = True ,IsNullable: = False ) >  _     Public   Property  [RegionID]()  As  Int32         Get              Return  gRegionID         End   Get          Set ( ByVal  value  As  Int32)            gRegionID  =  value         End   Set      End Property      < Sql9nchar(Name: = " RegionDescription " ,IsNullable: = False ,Length: = 50 ) >  _     Public   Property  [RegionDescription]()  As   String          Get              Return  gRegionDescription         End   Get          Set ( ByVal  value  As   String )            gRegionDescription  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Shippers " ,Schema: = " dbo " ) >  _ Public   Class  ShippersClass     Private  gShipperID  As  Int32     Private  gCompanyName  As   String      Private  gPhone  As   String      < Sql9int(Name: = " ShipperID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _     Public   Property  [ShipperID]()  As  Int32         Get              Return  gShipperID         End   Get          Set ( ByVal  value  As  Int32)            gShipperID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " CompanyName " ,IsNullable: = False ,Length: = 40 ) >  _     Public   Property  [CompanyName]()  As   String          Get              Return  gCompanyName         End   Get          Set ( ByVal  value  As   String )            gCompanyName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Phone " ,Length: = 24 ) >  _     Public   Property  [Phone]()  As   String          Get              Return  gPhone         End   Get          Set ( ByVal  value  As   String )            gPhone  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Suppliers " ,Schema: = " dbo " ) >  _ Public   Class  SuppliersClass     Private  gSupplierID  As  Int32     Private  gCompanyName  As   String      Private  gContactName  As   String      Private  gContactTitle  As   String      Private  gAddress  As   String      Private  gCity  As   String      Private  gRegion  As   String      Private  gPostalCode  As   String      Private  gCountry  As   String      Private  gPhone  As   String      Private  gFax  As   String      Private  gHomePage  As   String      < Sql9int(Name: = " SupplierID " ,IsPrimary: = True ,IsNullable: = False ,IsIdentity: = True ) >  _     Public   Property  [SupplierID]()  As  Int32         Get              Return  gSupplierID         End   Get          Set ( ByVal  value  As  Int32)            gSupplierID  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " CompanyName " ,IsNullable: = False ,Length: = 40 ) >  _     Public   Property  [CompanyName]()  As   String          Get              Return  gCompanyName         End   Get          Set ( ByVal  value  As   String )            gCompanyName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ContactName " ,Length: = 30 ) >  _     Public   Property  [ContactName]()  As   String          Get              Return  gContactName         End   Get          Set ( ByVal  value  As   String )            gContactName  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " ContactTitle " ,Length: = 30 ) >  _     Public   Property  [ContactTitle]()  As   String          Get              Return  gContactTitle         End   Get          Set ( ByVal  value  As   String )            gContactTitle  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Address " ,Length: = 60 ) >  _     Public   Property  [Address]()  As   String          Get              Return  gAddress         End   Get          Set ( ByVal  value  As   String )            gAddress  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " City " ,Length: = 15 ) >  _     Public   Property  [City]()  As   String          Get              Return  gCity         End   Get          Set ( ByVal  value  As   String )            gCity  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Region " ,Length: = 15 ) >  _     Public   Property  [Region]()  As   String          Get              Return  gRegion         End   Get          Set ( ByVal  value  As   String )            gRegion  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " PostalCode " ,Length: = 10 ) >  _     Public   Property  [PostalCode]()  As   String          Get              Return  gPostalCode         End   Get          Set ( ByVal  value  As   String )            gPostalCode  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Country " ,Length: = 15 ) >  _     Public   Property  [Country]()  As   String          Get              Return  gCountry         End   Get          Set ( ByVal  value  As   String )            gCountry  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Phone " ,Length: = 24 ) >  _     Public   Property  [Phone]()  As   String          Get              Return  gPhone         End   Get          Set ( ByVal  value  As   String )            gPhone  =  value         End   Set      End Property      < Sql9nvarchar(Name: = " Fax " ,Length: = 24 ) >  _     Public   Property  [Fax]()  As   String          Get              Return  gFax         End   Get          Set ( ByVal  value  As   String )            gFax  =  value         End   Set      End Property      < Sql9ntext(Name: = " HomePage " ) >  _     Public   Property  [HomePage]()  As   String          Get              Return  gHomePage         End   Get          Set ( ByVal  value  As   String )            gHomePage  =  value         End   Set      End Property End Class < Sql9Table(Name: = " Territories " ,Schema: = " dbo " ) >  _ Public   Class  TerritoriesClass     Private  gTerritoryID  As   String      Private  gTerritoryDescription  As   String      Private  gRegionID  As  Int32     < Sql9nvarchar(Name: = " TerritoryID " ,IsPrimary: = True ,IsNullable: = False ,Length: = 20 ) >  _     Public   Property  [TerritoryID]()  As   String          Get              Return  gTerritoryID         End   Get          Set ( ByVal  value  As   String )            gTerritoryID  =  value         End   Set      End Property      < Sql9nchar(Name: = " TerritoryDescription " ,IsNullable: = False ,Length: = 50 ) >  _     Public   Property  [TerritoryDescription]()  As   String          Get              Return  gTerritoryDescription         End   Get          Set ( ByVal  value  As   String )            gTerritoryDescription  =  value         End   Set      End Property      < Sql9int(Name: = " RegionID " ,IsNullable: = False ) >  _     Public   Property  [RegionID]()  As  Int32         Get              Return  gRegionID         End   Get          Set ( ByVal  value  As  Int32)            gRegionID  =  value         End   Set      End Property End Class

    这样的结果,我觉得表现简单,信息丰富,方便利用.

     

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