How to attach event handler to an event using reflection?

Question

I know about EventInfo.AddEventHandler(...) method which can be used to attach handler to an event. But what should be done if i can not even define proper sign

Answer 1

I think your code is failing because the HandleRfqSendComment is private. Instead you could directly create a delegate to that method, without passing its name to CreateDelegate. You would then need to convert the delegate to the required type, using the following method :

public static Delegate ConvertDelegate(Delegate originalDelegate, Type targetDelegateType)
{
    return Delegate.CreateDelegate(
        targetDelegateType,
        originalDelegate.Target,
        originalDelegate.Method);
}

In your code, you could use this method as follows :

EventInfo eventInfo = rfqWindowManager.GetType().GetEvent("SendComment");
Action handler = HandleRfqSendComment;
Delegate convertedHandler = ConvertDelegate(handler, eventInfo.EventHandlerType);
eventInfo.AddEventHandler(rfqWindowManager, convertedHandler);