Export (0) Print
Expand All
This topic has not yet been rated - Rate this topic

BaseDataBoundControl.OnDataPropertyChanged Method

Rebinds the data-bound control to its data after one of the base data source identification properties changes.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)
protected virtual void OnDataPropertyChanged()
ExceptionCondition
HttpException

An attempt was made to change the property value during the data-binding phase of the control.

The OnDataPropertyChanged method is called when the DataSource, DataSourceID, or DataMember property value changes any time after the page's PreRender event has occurred.

The following code example shows a property that belongs to a derived data-bound control class. The 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 DataBoundControl class.


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


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.