dsaddress.vb

采用Visual Bacis.NET开发的电子商务系统.

        
        Public Function GetEnumerator() As System.Collections.IEnumerator Implements System.Collections.IEnumerable.GetEnumerator
            Return Me.Rows.GetEnumerator
        End Function
        
        Public Overrides Function Clone() As DataTable
            Dim cln As AddressesDataTable = CType(MyBase.Clone,AddressesDataTable)
            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New AddressesDataTable
        End Function
        
        Friend Sub InitVars()
            Me.columnAddressID = Me.Columns("AddressID")
            Me.columnCustomerID = Me.Columns("CustomerID")
            Me.columnAddress1 = Me.Columns("Address1")
            Me.columnAddress2 = Me.Columns("Address2")
            Me.columnCity = Me.Columns("City")
            Me.column_Region = Me.Columns("Region")
            Me.columnPostalCode = Me.Columns("PostalCode")
            Me.columnCountry = Me.Columns("Country")
            Me.columnTelphone = Me.Columns("Telphone")
        End Sub
        
        Private Sub InitClass()
            Me.columnAddressID = New DataColumn("AddressID", GetType(System.UInt32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAddressID)
            Me.columnCustomerID = New DataColumn("CustomerID", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerID)
            Me.columnAddress1 = New DataColumn("Address1", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAddress1)
            Me.columnAddress2 = New DataColumn("Address2", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAddress2)
            Me.columnCity = New DataColumn("City", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCity)
            Me.column_Region = New DataColumn("Region", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column_Region)
            Me.columnPostalCode = New DataColumn("PostalCode", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPostalCode)
            Me.columnCountry = New DataColumn("Country", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCountry)
            Me.columnTelphone = New DataColumn("Telphone", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnTelphone)
            Me.columnAddress1.AllowDBNull = false
            Me.columnCity.AllowDBNull = false
            Me.column_Region.AllowDBNull = false
            Me.columnPostalCode.AllowDBNull = false
            Me.columnCountry.AllowDBNull = false
        End Sub
        
        Public Function NewAddressesRow() As AddressesRow
            Return CType(Me.NewRow,AddressesRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New AddressesRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(AddressesRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.AddressesRowChangedEvent) Is Nothing) Then
                RaiseEvent AddressesRowChanged(Me, New AddressesRowChangeEvent(CType(e.Row,AddressesRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.AddressesRowChangingEvent) Is Nothing) Then
                RaiseEvent AddressesRowChanging(Me, New AddressesRowChangeEvent(CType(e.Row,AddressesRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.AddressesRowDeletedEvent) Is Nothing) Then
                RaiseEvent AddressesRowDeleted(Me, New AddressesRowChangeEvent(CType(e.Row,AddressesRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.AddressesRowDeletingEvent) Is Nothing) Then
                RaiseEvent AddressesRowDeleting(Me, New AddressesRowChangeEvent(CType(e.Row,AddressesRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveAddressesRow(ByVal row As AddressesRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class AddressesRow
        Inherits DataRow
        
        Private tableAddresses As AddressesDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableAddresses = CType(Me.Table,AddressesDataTable)
        End Sub
        
        Public Property AddressID As System.UInt32
            Get
                Try 
                    Return CType(Me(Me.tableAddresses.AddressIDColumn),System.UInt32)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableAddresses.AddressIDColumn) = value
            End Set
        End Property
        
        Public Property CustomerID As Integer
            Get
                Try 
                    Return CType(Me(Me.tableAddresses.CustomerIDColumn),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableAddresses.CustomerIDColumn) = value
            End Set
        End Property
        
        Public Property Address1 As String
            Get
                Return CType(Me(Me.tableAddresses.Address1Column),String)
            End Get
            Set
                Me(Me.tableAddresses.Address1Column) = value
            End Set
        End Property
        
        Public Property Address2 As String
            Get
                Try 
                    Return CType(Me(Me.tableAddresses.Address2Column),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableAddresses.Address2Column) = value
            End Set
        End Property
        
        Public Property City As String
            Get
                Return CType(Me(Me.tableAddresses.CityColumn),String)
            End Get
            Set
                Me(Me.tableAddresses.CityColumn) = value
            End Set
        End Property
        
        Public Property _Region As String
            Get
                Return CType(Me(Me.tableAddresses._RegionColumn),String)
            End Get
            Set
                Me(Me.tableAddresses._RegionColumn) = value
            End Set
        End Property
        
        Public Property PostalCode As String
            Get
                Return CType(Me(Me.tableAddresses.PostalCodeColumn),String)
            End Get
            Set
                Me(Me.tableAddresses.PostalCodeColumn) = value
            End Set
        End Property
        
        Public Property Country As String
            Get
                Return CType(Me(Me.tableAddresses.CountryColumn),String)
            End Get
            Set
                Me(Me.tableAddresses.CountryColumn) = value
            End Set
        End Property
        
        Public Property Telphone As String
            Get
                Try 
                    Return CType(Me(Me.tableAddresses.TelphoneColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableAddresses.TelphoneColumn) = value
            End Set
        End Property
        
        Public Function IsAddressIDNull() As Boolean
            Return Me.IsNull(Me.tableAddresses.AddressIDColumn)
        End Function
        
        Public Sub SetAddressIDNull()
            Me(Me.tableAddresses.AddressIDColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsCustomerIDNull() As Boolean
            Return Me.IsNull(Me.tableAddresses.CustomerIDColumn)
        End Function
        
        Public Sub SetCustomerIDNull()
            Me(Me.tableAddresses.CustomerIDColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsAddress2Null() As Boolean
            Return Me.IsNull(Me.tableAddresses.Address2Column)
        End Function
        
        Public Sub SetAddress2Null()
            Me(Me.tableAddresses.Address2Column) = System.Convert.DBNull
        End Sub
        
        Public Function IsTelphoneNull() As Boolean
            Return Me.IsNull(Me.tableAddresses.TelphoneColumn)
        End Function
        
        Public Sub SetTelphoneNull()
            Me(Me.tableAddresses.TelphoneColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class AddressesRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As AddressesRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As AddressesRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As AddressesRow
            Get
                Return Me.eventRow
            End Get
        End Property
        
        Public ReadOnly Property Action As DataRowAction
            Get
                Return Me.eventAction
            End Get
        End Property
    End Class
End Class