NGWS SDK Documentation  

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DataRowChangeEventHandler Delegate

Represents the method that will handle the OnRowChanging, OnRowChanged, OnRowDeleting, and OnRowDeleted events of a DataTable.

[Visual Basic]
Public Delegate Sub DataRowChangeEventHandler( _
   ByVal sender As Object, _
   ByVal e As DataRowChangeEventArgs _
)
[C#]
public delegate void DataRowChangeEventHandler(
   object sender,
   DataRowChangeEventArgs e
);
[C++]
public __gc __delegate void DataRowChangeEventHandler(
   Object* sender,
   DataRowChangeEventArgs* e
);

[JScript] In JScript, you can use the delegates in the NGWS frameworks, but you cannot define your own.

Parameters [Visual Basic, C#, C++]

The declaration of your event-handling method must have the same parameters as the DataRowChangeEventHandler delegate declaration.

The source of the event.
A DataRowChangeEventArgs that contains the event data.

Remarks

When you create a DataRowChangeEventHandler delegate, you identify the method that will handle the vent. To associate the event with your event-handling method, add an instance of the delegate to the event. The event-handling method is called whenever the event occurs, until you remove the delegate. For more information about delegates, see <DelegateTopicTBD>.

Requirements

Namespace: System.Data

Assembly: System.Data.dll

Example [Visual Basic]

The following example adds a DataRowChangeEventHandler and the procedure to handle the event when a row is changed. The procedure prints the action and value of the changed row.

[Visual Basic]

Private myTable As DataTable

Private Sub AddHandler()
   Set myTable = datagrid1.DataGridTable.DataTable
   myTable.AddOnRowChanged New System.Data.DataRowChangeEventHandler(AddressOf Me.myDataTable_Changed)    
End Sub

Private Sub myDataTable_Changed(ByVal sender As System.Object, ByVal e As System.Data.DataRowChangeEventArgs)
   Debug.Print "Row Changed", e.Action, e.Row.Item(datagrid1.CurrentCell.ColumnNumber)
End Sub

See Also

System.Data Namespace | DataRow | DataTable | DataRowChangeEventArgs