SqlDataSourceCommandEventHandler Delegate
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SqlDataSourceCommandEventHandler Delegate


Represents the method that will handle the Updating, Inserting, and Deleting events of the SqlDataSource control.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public delegate void SqlDataSourceCommandEventHandler(
	object sender,
	SqlDataSourceCommandEventArgs e


Type: System.Object

The source of the event, the SqlDataSource control.

Type: System.Web.UI.WebControls.SqlDataSourceCommandEventArgs

A SqlDataSourceCommandEventArgs that contains the event data.

When you create a SqlDataSourceCommandEventHandler 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, unless you remove the delegate. For more information about event handler delegates, see NIB: Consuming Events.

The following code example demonstrates how to handle the Inserting event to perform any preprocessing steps, such as adding a parameter to the DbCommand object contained by the SqlDataSourceCommandEventArgs to capture the value of an output parameter, before a database action is performed. In this example an insert is performed by a DetailsView control in a classic master-detail scenario, using a stored procedure. The value of the output parameter, which represents the primary key of the newly inserted row, is examined when the Inserted event is raised after the operation completes.

The following code example demonstrates how to handle the RowUpdating event raised by the GridView control, to possibly cancel a database action performed by a SqlDataSource control associated with the GridView control.

.NET Framework
Available since 2.0
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