OnDeleted Method

ObjectDataSourceView.OnDeleted Method (ObjectDataSourceStatusEventArgs)


Raises the Deleted event after the ObjectDataSourceView object has completed a delete operation.

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

protected virtual void OnDeleted(
	ObjectDataSourceStatusEventArgs e

Raising an event invokes the event handler through a delegate. For more information, see NIB: Consuming Events.

The OnDeleted method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors:

When overriding the OnDeleted in a derived class, be sure to call the OnDeleted method for the base class so that registered delegates receive the event.

The following code example demonstrates how to use an ObjectDataSource control with a business object and a GridView control to delete data. The GridView initially displays a set of all employees, using the method that is specified by the SelectMethod property to retrieve the data from the EmployeeLogic object. Because the AutoGenerateDeleteButton property is set to true, the GridView control automatically displays a Delete button.

If you click the Delete button, the Delete operation is performed using the method that is specified by the DeleteMethod property and any parameters that are specified in the DeleteParameters collection. In this code example, some preprocessing and post-processing steps are also performed. The NorthwindEmployeeDeleting delegate is called to handle the Deleting event before the Delete operation is performed, and the NorthwindEmployeeDeleted delegate is called to handle the Deleted event after the Delete operation has completed, to perform an exception handling. In this example, if a NorthwindDataException is thrown, it is handled by this delegate.

To examine the implementation of the EmployeeLogic middle-tier business object that this code example uses, see ObjectDataSourceStatusEventArgs.

.NET Framework
Available since 2.0
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