dataset1.vb

适合VB初学者看

            Me.columnfTitle = Me.Columns("fTitle")
            Me.columnfImage = Me.Columns("fImage")
            Me.columnfIntro = Me.Columns("fIntro")
            Me.columnfHotel = Me.Columns("fHotel")
            Me.columnfAddress = Me.Columns("fAddress")
            Me.columnfBus = Me.Columns("fBus")
            Me.columnfPhone = Me.Columns("fPhone")
            Me.columnfPrice = Me.Columns("fPrice")
        End Sub
        
        Private Sub InitClass()
            Me.columnfID = New DataColumn("fID", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfID)
            Me.columnfTitle = New DataColumn("fTitle", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfTitle)
            Me.columnfImage = New DataColumn("fImage", GetType(System.Byte()), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfImage)
            Me.columnfIntro = New DataColumn("fIntro", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfIntro)
            Me.columnfHotel = New DataColumn("fHotel", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfHotel)
            Me.columnfAddress = New DataColumn("fAddress", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfAddress)
            Me.columnfBus = New DataColumn("fBus", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfBus)
            Me.columnfPhone = New DataColumn("fPhone", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfPhone)
            Me.columnfPrice = New DataColumn("fPrice", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfPrice)
            Me.columnfID.AllowDBNull = false
            Me.columnfTitle.AllowDBNull = false
        End Sub
        
        Public Function NewtSiteRow() As tSiteRow
            Return CType(Me.NewRow,tSiteRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New tSiteRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(tSiteRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.tSiteRowChangedEvent) Is Nothing) Then
                RaiseEvent tSiteRowChanged(Me, New tSiteRowChangeEvent(CType(e.Row,tSiteRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.tSiteRowChangingEvent) Is Nothing) Then
                RaiseEvent tSiteRowChanging(Me, New tSiteRowChangeEvent(CType(e.Row,tSiteRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.tSiteRowDeletedEvent) Is Nothing) Then
                RaiseEvent tSiteRowDeleted(Me, New tSiteRowChangeEvent(CType(e.Row,tSiteRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.tSiteRowDeletingEvent) Is Nothing) Then
                RaiseEvent tSiteRowDeleting(Me, New tSiteRowChangeEvent(CType(e.Row,tSiteRow), e.Action))
            End If
        End Sub
        
        Public Sub RemovetSiteRow(ByVal row As tSiteRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class tSiteRow
        Inherits DataRow
        
        Private tabletSite As tSiteDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tabletSite = CType(Me.Table,tSiteDataTable)
        End Sub
        
        Public Property fID As Integer
            Get
                Return CType(Me(Me.tabletSite.fIDColumn),Integer)
            End Get
            Set
                Me(Me.tabletSite.fIDColumn) = value
            End Set
        End Property
        
        Public Property fTitle As String
            Get
                Return CType(Me(Me.tabletSite.fTitleColumn),String)
            End Get
            Set
                Me(Me.tabletSite.fTitleColumn) = value
            End Set
        End Property
        
        Public Property fImage As Byte()
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fImageColumn),Byte())
                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.tabletSite.fImageColumn) = value
            End Set
        End Property
        
        Public Property fIntro As String
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fIntroColumn),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.tabletSite.fIntroColumn) = value
            End Set
        End Property
        
        Public Property fHotel As String
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fHotelColumn),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.tabletSite.fHotelColumn) = value
            End Set
        End Property
        
        Public Property fAddress As String
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fAddressColumn),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.tabletSite.fAddressColumn) = value
            End Set
        End Property
        
        Public Property fBus As String
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fBusColumn),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.tabletSite.fBusColumn) = value
            End Set
        End Property
        
        Public Property fPhone As String
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fPhoneColumn),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.tabletSite.fPhoneColumn) = value
            End Set
        End Property
        
        Public Property fPrice As String
            Get
                Try 
                    Return CType(Me(Me.tabletSite.fPriceColumn),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.tabletSite.fPriceColumn) = value
            End Set
        End Property
        
        Public Function IsfImageNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fImageColumn)
        End Function
        
        Public Sub SetfImageNull()
            Me(Me.tabletSite.fImageColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfIntroNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fIntroColumn)
        End Function
        
        Public Sub SetfIntroNull()
            Me(Me.tabletSite.fIntroColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfHotelNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fHotelColumn)
        End Function
        
        Public Sub SetfHotelNull()
            Me(Me.tabletSite.fHotelColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfAddressNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fAddressColumn)
        End Function
        
        Public Sub SetfAddressNull()
            Me(Me.tabletSite.fAddressColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfBusNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fBusColumn)
        End Function
        
        Public Sub SetfBusNull()
            Me(Me.tabletSite.fBusColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfPhoneNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fPhoneColumn)
        End Function
        
        Public Sub SetfPhoneNull()
            Me(Me.tabletSite.fPhoneColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfPriceNull() As Boolean
            Return Me.IsNull(Me.tabletSite.fPriceColumn)
        End Function
        
        Public Sub SetfPriceNull()
            Me(Me.tabletSite.fPriceColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class tSiteRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As tSiteRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As tSiteRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As tSiteRow
            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