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Alex Rivera
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Is there an INotifyPropertyChanged-like interface where the event args contains the old value of the property being changed, or do I have to extend that interface to create one? For example: public String ProcessDescription { get { return _ProcessDescription; } set { if( value != ProcessDescription ) { String oldValue = _ProcessDescription; _ProcessDescription = value; InvokePropertyChanged("ProcessDescription", oldvalue); } } } InvokePropertyChanged(String PropertyName, OldValue) { this.PropertyChanged( new ExtendedPropertyChangedEventArgs(PropertyName, OldValue) ); } I would also settle for a PropertyChanging-like event which provides this information, whether or not it supports e.Cancel.
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