[This documentation is preliminary and is subject to change.]
Occurs when a property value changes.
Syntax
Event information
| Delegate | PropertyChangedEventHandler |
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Remarks
The PropertyChanged event can indicate that all properties on the object have changed by using String.Empty for the PropertyName property of the PropertyChangedEventArgs. Note that you cannot use null (Nothing in Visual Basic) for this like you can in Windows Presentation Foundation (WPF) and Microsoft Silverlight.
Examples
This example demonstrates how to implement the INotifyPropertyChanged interface and raise the PropertyChanged event whenever property values change. For the complete code listing, see the Data Binding sample.
using System; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Text; using System.Threading.Tasks; namespace DataBinding { public class Employee : INotifyPropertyChanged { private string _name; private string _organization; public string Name { get { return _name; } set { _name = value; RaisePropertyChanged("Name"); } } public string Organization { get { return _organization; } set { _organization = value; RaisePropertyChanged("Organization"); } } public event PropertyChangedEventHandler PropertyChanged; protected void RaisePropertyChanged(string name) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(name)); } } } }
Requirements
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Minimum supported client | Windows 8 Release Preview |
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Minimum supported server | Windows Server 2012 |
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See also
Build date: 5/22/2012
