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HierarchicalDataBoundControl.OnDataPropertyChanged Method

Note: This method is new in the .NET Framework version 2.0.

Called when one of the base data source identification properties is changed, to re-bind the data-bound control to its data.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

protected override void OnDataPropertyChanged ()
protected void OnDataPropertyChanged ()
protected override function OnDataPropertyChanged ()

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 string DataTextField {
    get {
        object o = ViewState["DataTextField"];
        return((o == null) ? string.Empty : (string)o);
    }
    set {
        ViewState["DataTextField"] = value;
        if (Initialized) {
            OnDataPropertyChanged();
        }
    }
}

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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