addressdataset.vb

Visual Basic .NET程序设计教程源代码

            Me.Columns.Add(Me.columnemail)
            Me.columnfax = New DataColumn("fax", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfax)
            Me.columnfirstname = New DataColumn("firstname", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnfirstname)
            Me.columnidnumber = New DataColumn("idnumber", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnidnumber)
            Me.columnlastname = New DataColumn("lastname", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnlastname)
            Me.columnpc = New DataColumn("pc", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnpc)
            Me.columnphone = New DataColumn("phone", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnphone)
            Me.columnstate = New DataColumn("state", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnstate)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnidnumber}, true))
            Me.columnidnumber.AllowDBNull = false
            Me.columnidnumber.Unique = true
        End Sub
        
        Public Function NewaddressbookRow() As addressbookRow
            Return CType(Me.NewRow,addressbookRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New addressbookRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(addressbookRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.addressbookRowChangedEvent) Is Nothing) Then
                RaiseEvent addressbookRowChanged(Me, New addressbookRowChangeEvent(CType(e.Row,addressbookRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.addressbookRowChangingEvent) Is Nothing) Then
                RaiseEvent addressbookRowChanging(Me, New addressbookRowChangeEvent(CType(e.Row,addressbookRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.addressbookRowDeletedEvent) Is Nothing) Then
                RaiseEvent addressbookRowDeleted(Me, New addressbookRowChangeEvent(CType(e.Row,addressbookRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.addressbookRowDeletingEvent) Is Nothing) Then
                RaiseEvent addressbookRowDeleting(Me, New addressbookRowChangeEvent(CType(e.Row,addressbookRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveaddressbookRow(ByVal row As addressbookRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class addressbookRow
        Inherits DataRow
        
        Private tableaddressbook As addressbookDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableaddressbook = CType(Me.Table,addressbookDataTable)
        End Sub
        
        Public Property address As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.addressColumn),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.tableaddressbook.addressColumn) = value
            End Set
        End Property
        
        Public Property city As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.cityColumn),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.tableaddressbook.cityColumn) = value
            End Set
        End Property
        
        Public Property country As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.countryColumn),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.tableaddressbook.countryColumn) = value
            End Set
        End Property
        
        Public Property email As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.emailColumn),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.tableaddressbook.emailColumn) = value
            End Set
        End Property
        
        Public Property fax As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.faxColumn),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.tableaddressbook.faxColumn) = value
            End Set
        End Property
        
        Public Property firstname As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.firstnameColumn),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.tableaddressbook.firstnameColumn) = value
            End Set
        End Property
        
        Public Property idnumber As String
            Get
                Return CType(Me(Me.tableaddressbook.idnumberColumn),String)
            End Get
            Set
                Me(Me.tableaddressbook.idnumberColumn) = value
            End Set
        End Property
        
        Public Property lastname As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.lastnameColumn),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.tableaddressbook.lastnameColumn) = value
            End Set
        End Property
        
        Public Property pc As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.pcColumn),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.tableaddressbook.pcColumn) = value
            End Set
        End Property
        
        Public Property phone As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.phoneColumn),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.tableaddressbook.phoneColumn) = value
            End Set
        End Property
        
        Public Property state As String
            Get
                Try 
                    Return CType(Me(Me.tableaddressbook.stateColumn),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.tableaddressbook.stateColumn) = value
            End Set
        End Property
        
        Public Function IsaddressNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.addressColumn)
        End Function
        
        Public Sub SetaddressNull()
            Me(Me.tableaddressbook.addressColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IscityNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.cityColumn)
        End Function
        
        Public Sub SetcityNull()
            Me(Me.tableaddressbook.cityColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IscountryNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.countryColumn)
        End Function
        
        Public Sub SetcountryNull()
            Me(Me.tableaddressbook.countryColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsemailNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.emailColumn)
        End Function
        
        Public Sub SetemailNull()
            Me(Me.tableaddressbook.emailColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfaxNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.faxColumn)
        End Function
        
        Public Sub SetfaxNull()
            Me(Me.tableaddressbook.faxColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsfirstnameNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.firstnameColumn)
        End Function
        
        Public Sub SetfirstnameNull()
            Me(Me.tableaddressbook.firstnameColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IslastnameNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.lastnameColumn)
        End Function
        
        Public Sub SetlastnameNull()
            Me(Me.tableaddressbook.lastnameColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IspcNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.pcColumn)
        End Function
        
        Public Sub SetpcNull()
            Me(Me.tableaddressbook.pcColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsphoneNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.phoneColumn)
        End Function
        
        Public Sub SetphoneNull()
            Me(Me.tableaddressbook.phoneColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsstateNull() As Boolean
            Return Me.IsNull(Me.tableaddressbook.stateColumn)
        End Function
        
        Public Sub SetstateNull()
            Me(Me.tableaddressbook.stateColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class addressbookRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As addressbookRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As addressbookRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As addressbookRow
            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