AddEventHandler using reflection

.net, c#, events, reflection

Solution

Here's a sample showing how to attach an event using reflection:

class Program
{
    static void Main(string[] args)
    {
        var p = new Program();
        var eventInfo = p.GetType().GetEvent("TestEvent");
        var methodInfo = p.GetType().GetMethod("TestMethod");
        Delegate handler = 
             Delegate.CreateDelegate(eventInfo.EventHandlerType, 
                                     p, 
                                     methodInfo);
        eventInfo.AddEventHandler(p, handler);

        p.Test();
    }

    public event Func<string> TestEvent;

    public string TestMethod()
    {
        return "Hello World";
    }

    public void Test()
    {
        if (TestEvent != null)
        {
            Console.WriteLine(TestEvent());
        }
    }
}

Problem

I have this piece of code that does not work: ``` public CartaoCidadao() { InitializeComponent(); object o = WebDAV.Classes.SCWatcher.LoadAssembly(); MethodInfo method = this.GetType().GetMethod("Inserted", BindingFlags.NonPublic | BindingFlags.Instance); EventInfo eventInfo = o.GetType().GetEvent("CardInserted"); Type type = eventInfo.EventHandlerType; Delegate handler = Delegate.CreateDelegate(type, this , method); eventInfo.AddEventHandler(o, handler); } void Inserted(string readerName, string cardName) { System.Windows.Forms.MessageBox.Show(readerName); } ``` The Event CardInserted exists in another DLL file and object "o" loads OK. The delegate handler has a value after effect. I only can't fire the event.

Original source