Attaching method to execute for an Event

Question

I got an event from special API I'm working with, the event I'm working with is defined as

public event EventHandler<QuoteEventArgs> OnQuote


public class QuoteEventArgs : EventArgs

so what I'm trying to do is attach a method to run when I got a new Quote listening to this event.

so what I do is:

myInstance.OnQuote += new EventHandler<QuoteEventArgs>(doThis);

And the method is defined as:

public void doThis(object sender, QuoteEventArgs e){

//code here..

}

The error I get is:

Cannot implicity convert type 'System.EventHandler<MT4API.QuoteEventArgs>' to 'System.EventHandler'

but I don't seem to have a special eventHandler on the API either, so not quite sure how to make that work.

Answer 1

From the comment discussion, it appears that you are using a version of the library in which the event does not have a generic type, ie the signature is

public event EventHandler OnQuote;

This means you will also have to consume it in a non-generic way:-

myInstance.OnQuote += new EventHandler(doThis);

public void doThis(object sender, EventArgs e){

   var myArgs = (QuoteEventArgs)e;
   ...
}

Answer 2

My guess is that there are two classes with the name QuoteEventArgs , perhaps one from a referenced DLL and one from a generated proxy. Ensure that if you've got usings that the usings are correct.