Gets or sets a value that indicates whether list items are cleared before data binding.
Assembly: System.Web (in System.Web.dll)
[<ThemeableAttribute(false)>] abstract AppendDataBoundItems : bool with get, set [<ThemeableAttribute(false)>] override AppendDataBoundItems : bool with get, set
Property ValueType: System.Boolean
true if list items are not cleared before data binding; otherwise, false, if the items collection is cleared before data binding is performed. The default is false.
The property allows you to add items to the ListControl object before data binding occurs. After data binding, the items collection contains both the items from the data source and the previously added items.
The value of this property is stored in view state.
The following code example demonstrates how to include both data-bound items and items that are not data-bound in a ListBox control. In the Load event for the Page, one item is added to the Items collection and the property is set to true. Then, the ListBox control is bound to a DataTable control. The resulting ListBox control contains both the data-bound items and the item that was added individually.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.