Pixelgrease

• Oct 15th, 2006

 

When invoking multicast delegates, if any of the implementing methods throws an exception, it will prohibit the pending methods from invocation.

A way around this is to explicitly iterate the delegates and invoke them inside a try-catch block. The code might look like this:

// Instead of : myhandler(null, EventArgs.Empty);

foreach (MyDelegate md in myhandler.GetInvocationList())
{
    try
    {
        md(null, EventArgs.Empty));
    }
    catch
    { } // methods that throw exceptions are ignored
}