System.Timers.Timer hangs the Windows Forms application in c#

Question

The code below shows a timer that ticks every 100* 1000(milliseconds) to show a pop up message for registration.The below code is working but unfortunately my application gets h

Answer 1

The application hangs because you're doing a popup (I assume a MessageBox or some other modal dialog box). Of course the application is going to hang. You're putting a modal dialog up in the UI thread.

The problem isn't with the timer, but with your application design.