Reflection : GetEvent, GetMethod, Bind Method on Event

04-04-08, 06:35 PM

Claude

TValue oItem = (TValue)Activator.CreateInstance(typeof(TValue),
BindingFlags.Instance | BindingFlags.NonPublic,
null,
new object[] { m_nCleTemporaire },
System.Globalization.CultureInfo.CurrentCulture);

EventInfo oPropertyChanged = oItem.GetType().GetEvent("PropertyChanged");
MethodInfo eventHandler = this.GetType().GetMethod("Item_PropertyChanged",
BindingFlags.Instance | BindingFlags.NonPublic);

/** Next code line fails **/
Delegate d = Delegate.CreateDelegate(oPropertyChanged.EventHand lerType,
eventHandler);

The system says that it cannot murge the delegate with the defined type.

Why ???
Claude

04-04-08, 08:39 PM

Ignacio Machin ( .NET/ C# MVP )

On Apr 4, 1:35 pm, Claude <Cla> wrote:
> TValue oItem = (TValue)Activator.CreateInstance(typeof(TValue),
> BindingFlags.Instance |BindingFlags.NonPublic,
> null,
> new object[] { m_nCleTemporaire },
> System.Globalization.CultureInfo.CurrentCulture);
>
> EventInfo oPropertyChanged = oItem.GetType().GetEvent("PropertyChanged");
> MethodInfo eventHandler = this.GetType().GetMethod("Item_PropertyChanged",
> BindingFlags.Instance | BindingFlags.NonPublic);
>
> /** Next code line fails **/
> Delegate d = Delegate.CreateDelegate(oPropertyChanged.EventHand lerType,
> eventHandler);
>
> The system says that it cannot murge the delegate with the defined type.
>
> Why ???
> Claude

Are you sure that PropertyChanged event is of type EventHandlerType?
Most usually you get this error because of that

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