dsdl230.vb

通用进销存-visual basic编写

        
        Public Event DL230RowChanging As DL230RowChangeEventHandler
        
        Public Event DL230RowDeleted As DL230RowChangeEventHandler
        
        Public Event DL230RowDeleting As DL230RowChangeEventHandler
        
        Public Overloads Sub AddDL230Row(ByVal row As DL230Row)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function AddDL230Row(ByVal Seq As Long, ByVal CustomerID As String, ByVal CustomerAttribName As String, ByVal SalesQuantity As Decimal, ByVal SalesAmount As Decimal) As DL230Row
            Dim rowDL230Row As DL230Row = CType(Me.NewRow,DL230Row)
            rowDL230Row.ItemArray = New Object() {Seq, CustomerID, CustomerAttribName, SalesQuantity, SalesAmount}
            Me.Rows.Add(rowDL230Row)
            Return rowDL230Row
        End Function
        
        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 DL230DataTable = CType(MyBase.Clone,DL230DataTable)
            cln.InitVars
            Return cln
        End Function
        
        Friend Sub InitVars()
            Me.columnSeq = Me.Columns("Seq")
            Me.columnCustomerID = Me.Columns("CustomerID")
            Me.columnCustomerAttribName = Me.Columns("CustomerAttribName")
            Me.columnSalesQuantity = Me.Columns("SalesQuantity")
            Me.columnSalesAmount = Me.Columns("SalesAmount")
        End Sub
        
        Private Sub InitClass()
            Me.columnSeq = New DataColumn("Seq", GetType(System.Int64), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSeq)
            Me.columnCustomerID = New DataColumn("CustomerID", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerID)
            Me.columnCustomerAttribName = New DataColumn("CustomerAttribName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerAttribName)
            Me.columnSalesQuantity = New DataColumn("SalesQuantity", GetType(System.Decimal), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSalesQuantity)
            Me.columnSalesAmount = New DataColumn("SalesAmount", GetType(System.Decimal), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSalesAmount)
            Me.Constraints.Add(New UniqueConstraint("dsDL230Key1", New DataColumn() {Me.columnSeq, Me.columnCustomerID}, false))
            Me.columnSeq.AllowDBNull = false
            Me.columnCustomerID.AllowDBNull = false
        End Sub
        
        Public Function NewDL230Row() As DL230Row
            Return CType(Me.NewRow,DL230Row)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New DL230Row(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(DL230Row)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.DL230RowChangedEvent) Is Nothing) Then
                RaiseEvent DL230RowChanged(Me, New DL230RowChangeEvent(CType(e.Row,DL230Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.DL230RowChangingEvent) Is Nothing) Then
                RaiseEvent DL230RowChanging(Me, New DL230RowChangeEvent(CType(e.Row,DL230Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.DL230RowDeletedEvent) Is Nothing) Then
                RaiseEvent DL230RowDeleted(Me, New DL230RowChangeEvent(CType(e.Row,DL230Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.DL230RowDeletingEvent) Is Nothing) Then
                RaiseEvent DL230RowDeleting(Me, New DL230RowChangeEvent(CType(e.Row,DL230Row), e.Action))
            End If
        End Sub
        
        Public Sub RemoveDL230Row(ByVal row As DL230Row)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class DL230Row
        Inherits DataRow
        
        Private tableDL230 As DL230DataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableDL230 = CType(Me.Table,DL230DataTable)
        End Sub
        
        Public Property Seq As Long
            Get
                Return CType(Me(Me.tableDL230.SeqColumn),Long)
            End Get
            Set
                Me(Me.tableDL230.SeqColumn) = value
            End Set
        End Property
        
        Public Property CustomerID As String
            Get
                Return CType(Me(Me.tableDL230.CustomerIDColumn),String)
            End Get
            Set
                Me(Me.tableDL230.CustomerIDColumn) = value
            End Set
        End Property
        
        Public Property CustomerAttribName As String
            Get
                Try 
                    Return CType(Me(Me.tableDL230.CustomerAttribNameColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableDL230.CustomerAttribNameColumn) = value
            End Set
        End Property
        
        Public Property SalesQuantity As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableDL230.SalesQuantityColumn),Decimal)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableDL230.SalesQuantityColumn) = value
            End Set
        End Property
        
        Public Property SalesAmount As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableDL230.SalesAmountColumn),Decimal)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableDL230.SalesAmountColumn) = value
            End Set
        End Property
        
        Public Function IsCustomerAttribNameNull() As Boolean
            Return Me.IsNull(Me.tableDL230.CustomerAttribNameColumn)
        End Function
        
        Public Sub SetCustomerAttribNameNull()
            Me(Me.tableDL230.CustomerAttribNameColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsSalesQuantityNull() As Boolean
            Return Me.IsNull(Me.tableDL230.SalesQuantityColumn)
        End Function
        
        Public Sub SetSalesQuantityNull()
            Me(Me.tableDL230.SalesQuantityColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsSalesAmountNull() As Boolean
            Return Me.IsNull(Me.tableDL230.SalesAmountColumn)
        End Function
        
        Public Sub SetSalesAmountNull()
            Me(Me.tableDL230.SalesAmountColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class DL230RowChangeEvent
        Inherits EventArgs
        
        Private eventRow As DL230Row
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As DL230Row, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As DL230Row
            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