dsryzl.vb

一个实际的商业项目

            Me.columnJbgz = Me.Columns("Jbgz")
            Me.columnLao = Me.Columns("Lao")
            Me.columnYi = Me.Columns("Yi")
            Me.columnYe = Me.Columns("Ye")
        End Sub
        
        Private Sub InitClass()
            Me.columnBmmc = New DataColumn("Bmmc", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnBmmc)
            Me.columnGh = New DataColumn("Gh", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnGh)
            Me.columnXm = New DataColumn("Xm", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnXm)
            Me.columnXb = New DataColumn("Xb", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnXb)
            Me.columnSfzh = New DataColumn("Sfzh", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSfzh)
            Me.columnJbgz = New DataColumn("Jbgz", GetType(System.Decimal), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnJbgz)
            Me.columnLao = New DataColumn("Lao", GetType(System.Decimal), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnLao)
            Me.columnYi = New DataColumn("Yi", GetType(System.Decimal), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnYi)
            Me.columnYe = New DataColumn("Ye", GetType(System.Decimal), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnYe)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnGh}, true))
            Me.columnGh.AllowDBNull = false
            Me.columnGh.Unique = true
        End Sub
        
        Public Function NewRyzlRow() As RyzlRow
            Return CType(Me.NewRow,RyzlRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New RyzlRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(RyzlRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.RyzlRowChangedEvent) Is Nothing) Then
                RaiseEvent RyzlRowChanged(Me, New RyzlRowChangeEvent(CType(e.Row,RyzlRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.RyzlRowChangingEvent) Is Nothing) Then
                RaiseEvent RyzlRowChanging(Me, New RyzlRowChangeEvent(CType(e.Row,RyzlRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.RyzlRowDeletedEvent) Is Nothing) Then
                RaiseEvent RyzlRowDeleted(Me, New RyzlRowChangeEvent(CType(e.Row,RyzlRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.RyzlRowDeletingEvent) Is Nothing) Then
                RaiseEvent RyzlRowDeleting(Me, New RyzlRowChangeEvent(CType(e.Row,RyzlRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveRyzlRow(ByVal row As RyzlRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class RyzlRow
        Inherits DataRow
        
        Private tableRyzl As RyzlDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableRyzl = CType(Me.Table,RyzlDataTable)
        End Sub
        
        Public Property Bmmc As String
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.BmmcColumn),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.tableRyzl.BmmcColumn) = value
            End Set
        End Property
        
        Public Property Gh As String
            Get
                Return CType(Me(Me.tableRyzl.GhColumn),String)
            End Get
            Set
                Me(Me.tableRyzl.GhColumn) = value
            End Set
        End Property
        
        Public Property Xm As String
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.XmColumn),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.tableRyzl.XmColumn) = value
            End Set
        End Property
        
        Public Property Xb As String
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.XbColumn),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.tableRyzl.XbColumn) = value
            End Set
        End Property
        
        Public Property Sfzh As String
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.SfzhColumn),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.tableRyzl.SfzhColumn) = value
            End Set
        End Property
        
        Public Property Jbgz As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.JbgzColumn),Decimal)
                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.tableRyzl.JbgzColumn) = value
            End Set
        End Property
        
        Public Property Lao As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.LaoColumn),Decimal)
                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.tableRyzl.LaoColumn) = value
            End Set
        End Property
        
        Public Property Yi As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.YiColumn),Decimal)
                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.tableRyzl.YiColumn) = value
            End Set
        End Property
        
        Public Property Ye As Decimal
            Get
                Try 
                    Return CType(Me(Me.tableRyzl.YeColumn),Decimal)
                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.tableRyzl.YeColumn) = value
            End Set
        End Property
        
        Public Function IsBmmcNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.BmmcColumn)
        End Function
        
        Public Sub SetBmmcNull()
            Me(Me.tableRyzl.BmmcColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsXmNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.XmColumn)
        End Function
        
        Public Sub SetXmNull()
            Me(Me.tableRyzl.XmColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsXbNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.XbColumn)
        End Function
        
        Public Sub SetXbNull()
            Me(Me.tableRyzl.XbColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsSfzhNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.SfzhColumn)
        End Function
        
        Public Sub SetSfzhNull()
            Me(Me.tableRyzl.SfzhColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsJbgzNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.JbgzColumn)
        End Function
        
        Public Sub SetJbgzNull()
            Me(Me.tableRyzl.JbgzColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsLaoNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.LaoColumn)
        End Function
        
        Public Sub SetLaoNull()
            Me(Me.tableRyzl.LaoColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsYiNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.YiColumn)
        End Function
        
        Public Sub SetYiNull()
            Me(Me.tableRyzl.YiColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsYeNull() As Boolean
            Return Me.IsNull(Me.tableRyzl.YeColumn)
        End Function
        
        Public Sub SetYeNull()
            Me(Me.tableRyzl.YeColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class RyzlRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As RyzlRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As RyzlRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As RyzlRow
            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