dstitles.vb

Programming Web and Desktop Applications in ADO .NET and ASP .NET

            Me.columnPubID = Me.Columns("PubID")
            Me.columnSubject = Me.Columns("Subject")
            Me.columnTitle = Me.Columns("Title")
            Me.columnYear_Published = Me.Columns("Year Published")
        End Sub
        
        Private Sub InitClass()
            Me.columnComments = New DataColumn("Comments", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnComments)
            Me.columnDescription = New DataColumn("Description", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnDescription)
            Me.columnISBN = New DataColumn("ISBN", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnISBN)
            Me.columnNotes = New DataColumn("Notes", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnNotes)
            Me.columnPubID = New DataColumn("PubID", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPubID)
            Me.columnSubject = New DataColumn("Subject", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnSubject)
            Me.columnTitle = New DataColumn("Title", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnTitle)
            Me.columnYear_Published = New DataColumn("Year Published", GetType(System.Int16), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnYear_Published)
        End Sub
        
        Public Function NewTitlesRow() As TitlesRow
            Return CType(Me.NewRow,TitlesRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New TitlesRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(TitlesRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.TitlesRowChangedEvent) Is Nothing) Then
                RaiseEvent TitlesRowChanged(Me, New TitlesRowChangeEvent(CType(e.Row,TitlesRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.TitlesRowChangingEvent) Is Nothing) Then
                RaiseEvent TitlesRowChanging(Me, New TitlesRowChangeEvent(CType(e.Row,TitlesRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.TitlesRowDeletedEvent) Is Nothing) Then
                RaiseEvent TitlesRowDeleted(Me, New TitlesRowChangeEvent(CType(e.Row,TitlesRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.TitlesRowDeletingEvent) Is Nothing) Then
                RaiseEvent TitlesRowDeleting(Me, New TitlesRowChangeEvent(CType(e.Row,TitlesRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveTitlesRow(ByVal row As TitlesRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class TitlesRow
        Inherits DataRow
        
        Private tableTitles As TitlesDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableTitles = CType(Me.Table,TitlesDataTable)
        End Sub
        
        Public Property Comments As String
            Get
                Try 
                    Return CType(Me(Me.tableTitles.CommentsColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.CommentsColumn) = value
            End Set
        End Property
        
        Public Property Description As String
            Get
                Try 
                    Return CType(Me(Me.tableTitles.DescriptionColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.DescriptionColumn) = value
            End Set
        End Property
        
        Public Property ISBN As String
            Get
                Try 
                    Return CType(Me(Me.tableTitles.ISBNColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.ISBNColumn) = value
            End Set
        End Property
        
        Public Property Notes As String
            Get
                Try 
                    Return CType(Me(Me.tableTitles.NotesColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.NotesColumn) = value
            End Set
        End Property
        
        Public Property PubID As Integer
            Get
                Try 
                    Return CType(Me(Me.tableTitles.PubIDColumn),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.PubIDColumn) = value
            End Set
        End Property
        
        Public Property Subject As String
            Get
                Try 
                    Return CType(Me(Me.tableTitles.SubjectColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.SubjectColumn) = value
            End Set
        End Property
        
        Public Property Title As String
            Get
                Try 
                    Return CType(Me(Me.tableTitles.TitleColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.TitleColumn) = value
            End Set
        End Property
        
        Public Property Year_Published As Short
            Get
                Try 
                    Return CType(Me(Me.tableTitles.Year_PublishedColumn),Short)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableTitles.Year_PublishedColumn) = value
            End Set
        End Property
        
        Public Function IsCommentsNull() As Boolean
            Return Me.IsNull(Me.tableTitles.CommentsColumn)
        End Function
        
        Public Sub SetCommentsNull()
            Me(Me.tableTitles.CommentsColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsDescriptionNull() As Boolean
            Return Me.IsNull(Me.tableTitles.DescriptionColumn)
        End Function
        
        Public Sub SetDescriptionNull()
            Me(Me.tableTitles.DescriptionColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsISBNNull() As Boolean
            Return Me.IsNull(Me.tableTitles.ISBNColumn)
        End Function
        
        Public Sub SetISBNNull()
            Me(Me.tableTitles.ISBNColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsNotesNull() As Boolean
            Return Me.IsNull(Me.tableTitles.NotesColumn)
        End Function
        
        Public Sub SetNotesNull()
            Me(Me.tableTitles.NotesColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsPubIDNull() As Boolean
            Return Me.IsNull(Me.tableTitles.PubIDColumn)
        End Function
        
        Public Sub SetPubIDNull()
            Me(Me.tableTitles.PubIDColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsSubjectNull() As Boolean
            Return Me.IsNull(Me.tableTitles.SubjectColumn)
        End Function
        
        Public Sub SetSubjectNull()
            Me(Me.tableTitles.SubjectColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsTitleNull() As Boolean
            Return Me.IsNull(Me.tableTitles.TitleColumn)
        End Function
        
        Public Sub SetTitleNull()
            Me(Me.tableTitles.TitleColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsYear_PublishedNull() As Boolean
            Return Me.IsNull(Me.tableTitles.Year_PublishedColumn)
        End Function
        
        Public Sub SetYear_PublishedNull()
            Me(Me.tableTitles.Year_PublishedColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class TitlesRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As TitlesRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As TitlesRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As TitlesRow
            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