allorders.vb

来自「Mastering VBNet Include Source Code」· VB 代码 · 共 1,416 行 · 第 1/4 页

        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.OrdersRowDeletedEvent) Is Nothing) Then
                RaiseEvent OrdersRowDeleted(Me, New OrdersRowChangeEvent(CType(e.Row,OrdersRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.OrdersRowDeletingEvent) Is Nothing) Then
                RaiseEvent OrdersRowDeleting(Me, New OrdersRowChangeEvent(CType(e.Row,OrdersRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveOrdersRow(ByVal row As OrdersRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    Public Class OrdersRow
        Inherits DataRow
        
        Private tableOrders As OrdersDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableOrders = CType(Me.Table,OrdersDataTable)
        End Sub
        
        Public Property OrderID As Integer
            Get
                Return CType(Me(Me.tableOrders.OrderIDColumn),Integer)
            End Get
            Set
                Me(Me.tableOrders.OrderIDColumn) = value
            End Set
        End Property
        
        Public Property CustomerID As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.CustomerIDColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.CustomerIDColumn) = value
            End Set
        End Property
        
        Public Property EmployeeID As Integer
            Get
                Try 
                    Return CType(Me(Me.tableOrders.EmployeeIDColumn),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.EmployeeIDColumn) = value
            End Set
        End Property
        
        Public Property OrderDate As Date
            Get
                Try 
                    Return CType(Me(Me.tableOrders.OrderDateColumn),Date)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.OrderDateColumn) = value
            End Set
        End Property
        
        Public Property RequiredDate As Date
            Get
                Try 
                    Return CType(Me(Me.tableOrders.RequiredDateColumn),Date)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.RequiredDateColumn) = value
            End Set
        End Property
        
        Public Property ShippedDate As Date
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShippedDateColumn),Date)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShippedDateColumn) = value
            End Set
        End Property
        
        Public Property ShipVia As Integer
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipViaColumn),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipViaColumn) = value
            End Set
        End Property
        
        Public Property Freight As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableOrders.FreightColumn),Decimal)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.FreightColumn) = value
            End Set
        End Property
        
        Public Property ShipName As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipNameColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipNameColumn) = value
            End Set
        End Property
        
        Public Property ShipAddress As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipAddressColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipAddressColumn) = value
            End Set
        End Property
        
        Public Property ShipCity As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipCityColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipCityColumn) = value
            End Set
        End Property
        
        Public Property ShipRegion As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipRegionColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipRegionColumn) = value
            End Set
        End Property
        
        Public Property ShipPostalCode As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipPostalCodeColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipPostalCodeColumn) = value
            End Set
        End Property
        
        Public Property ShipCountry As String
            Get
                Try 
                    Return CType(Me(Me.tableOrders.ShipCountryColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableOrders.ShipCountryColumn) = value
            End Set
        End Property
        
        Public Property CustomersRow As CustomersRow
            Get
                Return CType(Me.GetParentRow(Me.Table.ParentRelations("CustomersOrders")),CustomersRow)
            End Get
            Set
                Me.SetParentRow(value, Me.Table.ParentRelations("CustomersOrders"))
            End Set
        End Property
        
        Public Function IsCustomerIDNull() As Boolean
            Return Me.IsNull(Me.tableOrders.CustomerIDColumn)
        End Function
        
        Public Sub SetCustomerIDNull()
            Me(Me.tableOrders.CustomerIDColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsEmployeeIDNull() As Boolean
            Return Me.IsNull(Me.tableOrders.EmployeeIDColumn)
        End Function
        
        Public Sub SetEmployeeIDNull()
            Me(Me.tableOrders.EmployeeIDColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsOrderDateNull() As Boolean
            Return Me.IsNull(Me.tableOrders.OrderDateColumn)
        End Function
        
        Public Sub SetOrderDateNull()
            Me(Me.tableOrders.OrderDateColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsRequiredDateNull() As Boolean
            Return Me.IsNull(Me.tableOrders.RequiredDateColumn)
        End Function
        
        Public Sub SetRequiredDateNull()
            Me(Me.tableOrders.RequiredDateColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShippedDateNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShippedDateColumn)
        End Function
        
        Public Sub SetShippedDateNull()
            Me(Me.tableOrders.ShippedDateColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipViaNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipViaColumn)
        End Function
        
        Public Sub SetShipViaNull()
            Me(Me.tableOrders.ShipViaColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsFreightNull() As Boolean
            Return Me.IsNull(Me.tableOrders.FreightColumn)
        End Function
        
        Public Sub SetFreightNull()
            Me(Me.tableOrders.FreightColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipNameNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipNameColumn)
        End Function
        
        Public Sub SetShipNameNull()
            Me(Me.tableOrders.ShipNameColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipAddressNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipAddressColumn)
        End Function
        
        Public Sub SetShipAddressNull()
            Me(Me.tableOrders.ShipAddressColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipCityNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipCityColumn)
        End Function
        
        Public Sub SetShipCityNull()
            Me(Me.tableOrders.ShipCityColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipRegionNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipRegionColumn)
        End Function
        
        Public Sub SetShipRegionNull()
            Me(Me.tableOrders.ShipRegionColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipPostalCodeNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipPostalCodeColumn)
        End Function
        
        Public Sub SetShipPostalCodeNull()
            Me(Me.tableOrders.ShipPostalCodeColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsShipCountryNull() As Boolean
            Return Me.IsNull(Me.tableOrders.ShipCountryColumn)
        End Function
        
        Public Sub SetShipCountryNull()
            Me(Me.tableOrders.ShipCountryColumn) = System.Convert.DBNull
        End Sub
        
        Public Function GetOrder_DetailsRows() As Order_DetailsRow()
            Return CType(Me.GetChildRows(Me.Table.ChildRelations("OrdersOrder_x0020_Details")),Order_DetailsRow())
        End Function
    End Class
    
    Public Class OrdersRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As OrdersRow
        
        Private eventAction As System.Data.DataRowAction
        
        Public Sub New(ByVal row As OrdersRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As OrdersRow
            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