System.Timers.Timer/Threading.Timer vs Thread with WhileLoop + Thread.Sleep For Periodic Tasks

Question

In my application I have to send periodic heartbeats to a "brother" application.

Is this better accomplished with System.Timers.Timer/Threading.Timer or Using a Thread with a while loop and a Thread.Sleep?

The heartbeat interval is 1 second.

while(!exit) {    //do work    Thread.Sleep(1000); } 

or

myTimer.Start( () => {                         //do work                        }, 1000); //pseudo code (not actual syntax)... 

Answer 1

System.Threading.Timer has my vote.

System.Timers.Timer is meant for use in server-based (your code is running as a server/service on a host machine rather than being run by a user) timer functionality.

A Thread with a While loop and Thread.Sleep command is truly a bad idea given the existance of more robust Timer mecahnisms in .NET.