Using SynchronizationContext for sending events back to the UI for WinForms or WPF

Question

I\'m using a SynchronizationContext to marshal events back to the UI thread from my DLL that does a lot of multi-threaded background tasks.

I know the singleton patt

Answer 1

Rather than compare to the current one, why not just let it worry about it; then it is simply a case of handling the "no context" case:

static void RaiseOnUIThread(EventHandler handler, object sender) {
    if (handler != null) {
        SynchronizationContext ctx = SynchronizationContext.Current;
        if (ctx == null) {
            handler(sender, EventArgs.Empty);
        } else {
            ctx.Post(delegate { handler(sender, EventArgs.Empty); }, null);
        }
    }
}