Raises the OnRowUpdating event.
[Visual Basic] MustOverride Protected Sub OnRowUpdating( _ ByVal ruevent As RowUpdatingEventArgs _ ) [C#] protected abstract void OnRowUpdating( RowUpdatingEventArgs ruevent ); [C++] protected: virtual void OnRowUpdating( RowUpdatingEventArgs* ruevent ) = 0; [JScript] protected abstract function OnRowUpdating( ruevent : RowUpdatingEventArgs );
Raising an event invokes the event-handling method through a delegate. For an overview, see TBD.
Notes to Inheritors: When overriding OnRowUpdating in a derived class, be sure to call the bases class's OnRowUpdating method.
The following example uses this method within a derived class.
[Visual Basic]
' MyDataSetCommand.class derived from ADODataSetCommand Inherits ADODataSetCommand ' create the method for row updated Public Sub OnRowUpdated(event As RowUpdatedEventArgs) ' show a message box telling user of row update Dim myMsgBox As MessageBox myMsgBox.Show "A row has been updated." ' call the base class method MyBase.OnRowUpdated event End Sub ' create the method for row updating Public Sub OnRowUpdating(event As RowUpdatingEventArgs) ' show a message box telling user of row update Dim myMsgBox As MessageBox myMsgBox.Show "A row is being updated ..." ' call the base class method MyBase.OnRowUpdating event End Sub ' create the method for the schema changing Public Sub OnSchemaChanging(event As SchemaChangingEventArgs) ' show a message box telling user of schema change Dim myMsgBox As MessageBox myMsgBox.Show "The schema is changing ..." ' call the base class method MyBase.OnSchemaChanging event End Sub ' create the method for the schema changed Public Sub OnSchemaChanged(event As SchemaChangedEventArgs) ' show a message box telling user of schema change Dim myMsgBox As MessageBox myMsgBox.Show "The schema has changed" ' call the base class method MyBase.OnSchemaChanged event End Sub ' create the method for the schema being mapped Public Sub OnSchemaMapping(event As SchemaMappingEventArgs) ' show a message box telling the user of schema map Dim myMsgBox As MessageBox myMsgBox.Show "The schema is currently being mapped ..." ' call the base class method MyBase.OnSchemaMapping event End Sub
DBDataSetCommand Class | DBDataSetCommand Members | System.Data.Internal Namespace | OnRowUpdated