GridView.OnSelectedIndexChanging(GridViewSelectEventArgs) Method

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Raises the SelectedIndexChanging event.

protected:
 virtual void OnSelectedIndexChanging(System::Web::UI::WebControls::GridViewSelectEventArgs ^ e);

protected virtual void OnSelectedIndexChanging(System.Web.UI.WebControls.GridViewSelectEventArgs e);

abstract member OnSelectedIndexChanging : System.Web.UI.WebControls.GridViewSelectEventArgs -> unit
override this.OnSelectedIndexChanging : System.Web.UI.WebControls.GridViewSelectEventArgs -> unit

Protected Overridable Sub OnSelectedIndexChanging (e As GridViewSelectEventArgs)

Parameters

e: GridViewSelectEventArgs

A GridViewSelectEventArgs that contains event data.

Remarks

The SelectedIndexChanging event is raised when a row's Select button is clicked, but before the GridView control handles the select operation. This enables you to provide an event-handling method that performs a custom routine, such as canceling the selection operation, whenever this event occurs.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnSelectedIndexChanging 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 OnSelectedIndexChanging(GridViewSelectEventArgs) in a derived class, be sure to call the base class's OnSelectedIndexChanging(GridViewSelectEventArgs) method so that registered delegates receive the event.

Applies to

Продукт	Версії
.NET Framework	2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

Поділитися через