Which .Net Timer() to use

Question

I have a legacy WinForms Mdi App in VB.Net 2.0 which I am adding functionality to. One of the additions is a warning which needs to be raised when the current time nears a s

Answer 1

The System.Forms.Timer actually works on the main thread using the windows message queue. This makes it somewhat inacurate but since you don't really need ms precision it's good enough. You could use one of the other timers that work on a separate thread but since you need to activate a winforms component that work in the main you'll need to use Form.Invoke or some other way to pass the event to the main thread - which would cause some latency as well. In conclusion use the System.Forms.Timer when you need to activate a winforms based component.