FormViewUpdateEventArgs Class

Provides data for the ItemUpdating event.

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

public ref class FormViewUpdateEventArgs : public CancelEventArgs
public class FormViewUpdateEventArgs extends CancelEventArgs
public class FormViewUpdateEventArgs extends CancelEventArgs
Not applicable.

The FormView control raises the ItemUpdating event when an Update button (a button with its CommandName property set to "Update") within the control is clicked, but before the FormView control updates the record. This allows you to provide an event-handling method that performs a custom routine, such as HTML encoding or validating the values of a record before updating it in the data source, whenever this event occurs.

A FormViewUpdateEventArgs object is passed to the event-handling method, which allows you to determine the value of an optional command argument sent to the FormView control and to indicate whether the update operation should be canceled. To determine the value of the command argument, use the CommandArgument property. To cancel the update operation, set the Cancel property to true. If you need to access the original key field values for the record being updated, use the Keys property. The original non-key field values can be accessed by using the OldValues property. Updated values (which include updated key field values, if you allow the user to edit key fields) are accessed using the NewValues property.

For more information about handling events, see Consuming Events.

For a list of initial property values for an instance of the FormViewUpdateEventArgs class, see the FormViewUpdateEventArgs constructor.

The following example demonstrates how to use the FormViewUpdateEventArgs object passed to the event-handling method for the ItemUpdating event to validate the values entered by the user.

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

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System.Object
   System.EventArgs
     System.ComponentModel.CancelEventArgs
      System.Web.UI.WebControls.FormViewUpdateEventArgs

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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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