Provides data for the ItemUpdating event.
Assembly: System.Web (in System.Web.dll)
Thetype exposes the following members.
|Cancel||Gets or sets a value indicating whether the event should be canceled. (Inherited from CancelEventArgs.)|
|CommandArgument||Gets the command argument for the update operation passed to the FormView control.|
|Keys||Gets a dictionary that contains the original key field name/value pairs for the record to update.|
|NewValues||Gets a dictionary that contains the new field name/value pairs for the record to update.|
|OldValues||Gets a dictionary that contains the original non-key field name/value pairs for the record to update.|
|Equals(Object)||Determines whether the specified object is equal to the current object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Serves as the default hash function. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
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 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 class, see the FormViewUpdateEventArgs constructor.