ListView.OnItemEditing(ListViewEditEventArgs) Method

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.Extensions.dll

Important

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Raises the ItemEditing event.

protected:
 virtual void OnItemEditing(System::Web::UI::WebControls::ListViewEditEventArgs ^ e);

protected virtual void OnItemEditing (System.Web.UI.WebControls.ListViewEditEventArgs e);

abstract member OnItemEditing : System.Web.UI.WebControls.ListViewEditEventArgs -> unit
override this.OnItemEditing : System.Web.UI.WebControls.ListViewEditEventArgs -> unit

Protected Overridable Sub OnItemEditing (e As ListViewEditEventArgs)

Parameters

e: ListViewEditEventArgs

The event data.

Exceptions

InvalidOperationException

The ListView control is not bound to a data source control by using the DataSourceID property.

Remarks

The ItemEditing event is raised when an item's Edit button is clicked, but before the ListView control enters edit mode. (An Edit button is a button control whose CommandName property is set to "Edit".) This enables you to perform a custom routine whenever this event occurs, such as canceling the edit operation.

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

The OnItemEditing method also enables 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 you override OnItemEditing(ListViewEditEventArgs) in a derived class, call the base class's OnItemEditing(ListViewEditEventArgs) method so that registered delegates receive the event.

Applies to