ChildrenAsTriggers Property

UpdatePanel.ChildrenAsTriggers Property

.NET Framework (current version)
 

Gets or sets a value that indicates whether postbacks from immediate child controls of an UpdatePanel control update the panel's content.

Namespace:   System.Web.UI
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

member ChildrenAsTriggers : bool with get, set

Property Value

Type: System.Boolean

true if postbacks from immediate child controls of the UpdatePanel control update the panel's content; otherwise, false. The default is true.

Set the ChildrenAsTriggers property to true if you want postbacks from immediate child controls of the UpdatePanel control to cause an update of the panel's content. Child controls of nested UpdatePanel controls will not cause an update of the parent UpdatePanel control's content unless you call the Update method explicitly or you define the child controls as triggers.

System_CAPS_noteNote

When the UpdateMode property is set to Always and the ChildrenAsTriggers property is set to false, an InvalidOperationException exception is thrown during the OnPreRender method. This combination of properties is not allowed for the UpdatePanel control.

A scenario where you might set ChildrenAsTriggers to false is when you have two UpdatePanel controls and you want a postback from the first panel to update the content of the second panel but not update its own content. For example, the first panel might be a list of products to buy and the second panel might be a shopping cart.

.NET Framework
Available since 3.5
Return to top
Show:
© 2016 Microsoft