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DataRowChangeEventHandler Delegate

Represents the method that will handle the RowChanging, RowChanged, RowDeleting, and RowDeleted events of a DataTable.

Namespace: System.Data
Assembly: System.Data (in system.data.dll)

'Declaration
Public Delegate Sub DataRowChangeEventHandler ( _
	sender As Object, _
	e As DataRowChangeEventArgs _
)
'Usage
Dim instance As New DataRowChangeEventHandler(AddressOf HandlerMethod)
/** @delegate */
public delegate void DataRowChangeEventHandler (
	Object sender, 
	DataRowChangeEventArgs e
)
JScript supports the use of delegates, but not the declaration of new ones.

Parameters

sender

The source of the event.

e

A DataRowChangeEventArgs that contains the event data.

When you create a DataRowChangeEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, until you remove the delegate. For more information about delegates, see Events and Delegates.

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.

Private dataTable As DataTable    
   
Private Sub [AddHandler]()
    dataTable = New DataTable("dataTable")
    AddHandler dataTable.RowChanged, AddressOf dataTable_Changed
End Sub    
   
Private Sub dataTable_Changed _
   (sender As Object, e As System.Data.DataRowChangeEventArgs)

    Console.WriteLine("Row Changed", e.Action, _
       e.Row(dataGrid1.CurrentCell.ColumnNumber))
End Sub

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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