INotifyPropertyChanged Interface and PropertyChangedEventHandler in WPF
The INotifyPropertyChanged interface is used to notify clients, typically binding clients, which a property value has changed. The INotifyPropertyChanged interface contains an event called PropertyChanged. Whenever a property on a ViewModel / Model object has a new value, it can raise the PropertyChanged event to notify the WPF binding system of the new value. Upon receiving that notification, the binding system queries the property, and the bound property on some UI element receives the new value
public class MyClass:INotifyPropertyChanged
{
private int _ID;
private string _Name;
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public int ID
{
get
{
return _ID;
}
set
{
_ID = value;
OnPropertyChanged("ID");
}
}
public string Name
{
get
{
return _Name;
}
set
{
_Name = value;
OnPropertyChanged("Name");
}
}
}
No comments:
Post a Comment