HierarchicalDataBoundControl.OnDataPropertyChanged Method ()
.NET Framework (current version)
Called when one of the base data source identification properties is changed, to re-bind the data-bound control to its data.
Assembly: System.Web (in System.Web.dll)
The OnDataPropertyChanged method is called when the DataSource or DataSourceID is changed any time after the page's PreRender event.
The following code example demonstrates how a data-bound control can call the OnDataPropertyChanged method if a property that identifies a data source is changed after the data-bound control is initialized. This code example is part of a larger example provided for the HierarchicalDataBoundControl class.
Public Property DataTextField() As String Get Dim o As Object = ViewState("DataTextField") If o Is Nothing Then Return String.Empty Else Return CStr(o) End If End Get Set(ByVal value As String) ViewState("DataTextField") = value If Initialized Then OnDataPropertyChanged() End If End Set End Property
.NET Framework
Available since 2.0
Available since 2.0
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