DetailsView.ItemUpdating Event

Occurs when an Update button within a DetailsView control is clicked, but before the update operation.

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

public:
event DetailsViewUpdateEventHandler^ ItemUpdating {
	void add (DetailsViewUpdateEventHandler^ value);
	void remove (DetailsViewUpdateEventHandler^ value);
}
/** @event */
public void add_ItemUpdating (DetailsViewUpdateEventHandler value)

/** @event */
public void remove_ItemUpdating (DetailsViewUpdateEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.

The ItemUpdating event is raised when an Update button within a DetailsView control is clicked, but before the update operation. This allows you to provide an event handler that performs a custom routine, such as canceling the update operation, whenever this event occurs.

A DetailsViewUpdateEventArgs object is passed to the event handler, which allows you to determine the index of the record being updated and to indicate that the update operation should be canceled. To cancel the update operation, set the Cancel property to true. You can also manipulate the Keys, OldValues, and NewValues collections, if necessary, before the values are passed to the data source. A common way to use these collections is to HTML-encode the values supplied by the user before they are stored in the data source. This helps to prevent script injection attacks.

For more information about handling events, see Consuming Events.

The following code example demonstrates how to use the ItemUpdating event to HTML-encode the values entered by the user before a record is updated in the data source.

No code example is currently available or this language may not be supported.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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