>I am trying to understand events. Coming from VFP where there are no user-definabnle events, it's a bit of a curve for me.
>
>I wrote this class which returns a SqlDataReader, and which contains an event:
>

> if (_oException == null)
> {
> ReaderRetreived();
> }
>
> return oReader;

The above code will fail if you don't have anyone subscribed to the event. You need to check if it's null or not.

if (ReadRetreived != null)
   ReaderRetreived();

Also, it's a common/best practice to call an event from a single method called "OnEventName", ex.

public virtual void OnReaderRetrieved()
{
   if (ReaderRetrieved != null)
      ReaderRetrieved();
}

In this case, it's complaining because an event handler requires a real instance of an object in order to hook up the event. You're inside of a static method, which means you don't have an instance reference. In this case you can make your method call static and it will work:

private static void ReaderRetreived()
{
    while (oReader.Read())
    {
        // Some code here
    }
}

Or, move the code in this method out to a new class, instanciate the class, then hook up the event (basically get it out of the static method)

BTW - the event hook up code can be shortened to:

   oBank.ReaderRetreived += new ReaderRetreivedEvent(ReaderRetrieved);
   // Can also be shorted to:
   oBank.ReaderRetreived += ReaderRetrieved;
}