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HierarchicalDataBoundControl.OnDataPropertyChanged Method

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()

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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

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