'ContactManager.Notifier' does not implement interface member 'System.ComponentModel.INotifyPropertyChanged.PropertyChanged' C:\Users\1352756\AppData\Local\Temporary Projects\ContactManager\Notifier.cs 7 27 ContactManager
This is the Error i am getting and i can not find any solution for this.......
namespace ContactManager
{
[Serializable]
public abstract class Notifier:INotifyPropertyChanged
{
[field: NonSerialized]
public event PropertyChangedEventHandler propertychanged;
protected virtual void Onpropertychanged(string propertyname)
{
var Eventhandler = this.propertychanged;
Onpropertychanged("propertyname");
if (Eventhandler != null)
{
Eventhandler(this,
new PropertyChangedEventArgs(propertyname)
);
}
}
}
}