dswgxg.vb

一个实际的商业项目

            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New WgDataTable
        End Function
        
        Friend Sub InitVars()
            Me.columnRq = Me.Columns("Rq")
            Me.columnGh = Me.Columns("Gh")
            Me.columnXm = Me.Columns("Xm")
            Me.columnPf = Me.Columns("Pf")
            Me.columnGx = Me.Columns("Gx")
            Me.columnSl = Me.Columns("Sl")
            Me.columnSl1 = Me.Columns("Sl1")
            Me.columnSl2 = Me.Columns("Sl2")
            Me.columnSl3 = Me.Columns("Sl3")
            Me.columnBz = Me.Columns("Bz")
        End Sub
        
        Private Sub InitClass()
            Me.columnRq = New DataColumn("Rq", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnRq)
            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.columnPf = New DataColumn("Pf", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPf)
            Me.columnGx = New DataColumn("Gx", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnGx)
            Me.columnSl = New DataColumn("Sl", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSl)
            Me.columnSl1 = New DataColumn("Sl1", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSl1)
            Me.columnSl2 = New DataColumn("Sl2", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSl2)
            Me.columnSl3 = New DataColumn("Sl3", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSl3)
            Me.columnBz = New DataColumn("Bz", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnBz)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnRq, Me.columnGh, Me.columnXm, Me.columnPf, Me.columnGx}, true))
            Me.columnRq.AllowDBNull = false
            Me.columnGh.AllowDBNull = false
            Me.columnXm.AllowDBNull = false
            Me.columnPf.AllowDBNull = false
            Me.columnGx.AllowDBNull = false
        End Sub
        
        Public Function NewWgRow() As WgRow
            Return CType(Me.NewRow,WgRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New WgRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(WgRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.WgRowChangedEvent) Is Nothing) Then
                RaiseEvent WgRowChanged(Me, New WgRowChangeEvent(CType(e.Row,WgRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.WgRowChangingEvent) Is Nothing) Then
                RaiseEvent WgRowChanging(Me, New WgRowChangeEvent(CType(e.Row,WgRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.WgRowDeletedEvent) Is Nothing) Then
                RaiseEvent WgRowDeleted(Me, New WgRowChangeEvent(CType(e.Row,WgRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.WgRowDeletingEvent) Is Nothing) Then
                RaiseEvent WgRowDeleting(Me, New WgRowChangeEvent(CType(e.Row,WgRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveWgRow(ByVal row As WgRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class WgRow
        Inherits DataRow
        
        Private tableWg As WgDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableWg = CType(Me.Table,WgDataTable)
        End Sub
        
        Public Property Rq As String
            Get
                Return CType(Me(Me.tableWg.RqColumn),String)
            End Get
            Set
                Me(Me.tableWg.RqColumn) = value
            End Set
        End Property
        
        Public Property Gh As String
            Get
                Return CType(Me(Me.tableWg.GhColumn),String)
            End Get
            Set
                Me(Me.tableWg.GhColumn) = value
            End Set
        End Property
        
        Public Property Xm As String
            Get
                Return CType(Me(Me.tableWg.XmColumn),String)
            End Get
            Set
                Me(Me.tableWg.XmColumn) = value
            End Set
        End Property
        
        Public Property Pf As String
            Get
                Return CType(Me(Me.tableWg.PfColumn),String)
            End Get
            Set
                Me(Me.tableWg.PfColumn) = value
            End Set
        End Property
        
        Public Property Gx As String
            Get
                Return CType(Me(Me.tableWg.GxColumn),String)
            End Get
            Set
                Me(Me.tableWg.GxColumn) = value
            End Set
        End Property
        
        Public Property Sl As Integer
            Get
                Try 
                    Return CType(Me(Me.tableWg.SlColumn),Integer)
                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.tableWg.SlColumn) = value
            End Set
        End Property
        
        Public Property Sl1 As Integer
            Get
                Try 
                    Return CType(Me(Me.tableWg.Sl1Column),Integer)
                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.tableWg.Sl1Column) = value
            End Set
        End Property
        
        Public Property Sl2 As Integer
            Get
                Try 
                    Return CType(Me(Me.tableWg.Sl2Column),Integer)
                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.tableWg.Sl2Column) = value
            End Set
        End Property
        
        Public Property Sl3 As Integer
            Get
                Try 
                    Return CType(Me(Me.tableWg.Sl3Column),Integer)
                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.tableWg.Sl3Column) = value
            End Set
        End Property
        
        Public Property Bz As String
            Get
                Try 
                    Return CType(Me(Me.tableWg.BzColumn),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.tableWg.BzColumn) = value
            End Set
        End Property
        
        Public Function IsSlNull() As Boolean
            Return Me.IsNull(Me.tableWg.SlColumn)
        End Function
        
        Public Sub SetSlNull()
            Me(Me.tableWg.SlColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsSl1Null() As Boolean
            Return Me.IsNull(Me.tableWg.Sl1Column)
        End Function
        
        Public Sub SetSl1Null()
            Me(Me.tableWg.Sl1Column) = System.Convert.DBNull
        End Sub
        
        Public Function IsSl2Null() As Boolean
            Return Me.IsNull(Me.tableWg.Sl2Column)
        End Function
        
        Public Sub SetSl2Null()
            Me(Me.tableWg.Sl2Column) = System.Convert.DBNull
        End Sub
        
        Public Function IsSl3Null() As Boolean
            Return Me.IsNull(Me.tableWg.Sl3Column)
        End Function
        
        Public Sub SetSl3Null()
            Me(Me.tableWg.Sl3Column) = System.Convert.DBNull
        End Sub
        
        Public Function IsBzNull() As Boolean
            Return Me.IsNull(Me.tableWg.BzColumn)
        End Function
        
        Public Sub SetBzNull()
            Me(Me.tableWg.BzColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class WgRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As WgRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As WgRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As WgRow
            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