using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GpsTestApp {
    public static class Extensions {
        public static void InvokeIfRequired(this Control c, Action a) {
            if (c.InvokeRequired) {
                c.Invoke(new MethodInvoker(() => { InvokeIfRequired(c, a); }));
                return;
            }
            try {
                if (!c.IsHandleCreated) { IntPtr i = c.Handle; }    // See links above - handle is not created, will cause cross-thread exceptions
                a.Invoke();
            } catch (Exception ex) { }
        }
    }
}