The DataControlField.OnFieldChanged method raises an event signaling that the System.Web.UI.WebControls.DataControlField object's state has changed. Changes to the following properties cause this event to be raised: DataControlField.FooterText, DataControlField.HeaderImageUrl, DataControlField.HeaderText, DataControlField.ShowHeader, DataControlField.SortExpression, and DataControlField.Visible. Derived type properties also raise this event when state changes occur. Web server controls such as System.Web.UI.WebControls.DetailsView and System.Web.UI.WebControls.GridView typically call the DataBind method in response to a field change event.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The DataControlField.OnFieldChanged 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.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 2.0.0.0
Since: .NET 2.0