Une solution rapide et facile est d'utiliser un décorateur DynamicObject pour ajouter le changement de comportement de notificcation sans avoir à changer vos classes d'origine, ou d'écrire une suite de définitions de classes partielles
public class DynamicBindingProxy<T> : DynamicObject, INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private static readonly Dictionary<string, Dictionary<string,
PropertyInfo>> properties = new Dictionary<string,
Dictionary<string, PropertyInfo>>();
private readonly T instance;
private readonly string typeName;
public DynamicBindingProxy(T instance)
{
this.instance = instance;
var type = typeof(T);
typeName = type.FullName;
if (!properties.ContainsKey(typeName))
SetProperties(type, typeName);
}
private static void SetProperties(Type type, string typeName)
{
var props = type.GetProperties(
BindingFlags.Public | BindingFlags.Instance);
var dict = props.ToDictionary(prop => prop.Name);
properties.Add(typeName, dict);
}
public override bool TryGetMember(GetMemberBinder binder,
out object result)
{
if (properties[typeName].ContainsKey(binder.Name))
{
result = properties[typeName][binder.Name]
.GetValue(instance, null);
return true;
}
result = null;
return false;
}
public override bool TrySetMember(SetMemberBinder binder,
object value)
{
if (properties[typeName].ContainsKey(binder.Name))
{
properties[typeName][binder.Name]
.SetValue(instance, value, null);
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(binder.Name));
return true;
}
return false;
}
}
et Heres un échantillon useage:
public partial class MainWindow : Window
{
private readonly TestObj tObj;
private DynamicBindingProxy<TestObj> dynObj;
public MainWindow()
{
InitializeComponent();
tObj = new TestObj() { Name = "test", Amount = 123.45, ID = 44, SomeDate = DateTime.Now };
dynObj = new DynamicBindingProxy<TestObj>(tObj);
DataContext = dynObj;
}
private void UpdateName(object sender, RoutedEventArgs e)
{
((dynamic)dynObj).Name = newText.Text;
}
}
détails se trouvent sur un billet de blog, j'ai écrit particulièrement sur cette questions http://www.deanchalk.me.uk/post/WPF-e28093-Easy-INotifyPropertyChanged-Via-DynamicObject-Proxy.aspx
Je n'ai pas remarqué ça ^^ Thank – Karnalta