StopWatch

Question

Good evening C# professionals :) I'm an IT student and I'm currently doing my thesis. Can you guys help me? The system I'm working with is timesheet of service engineers. The system supposed to have a timewatch/stopwatch that triggers to start whenever the service engineer started his time. And of course stops when he stopped the time. And then that's it, his work hours will be then calculated based on the time duration.. I'm using asp.net. Is this possible using C# language? please help me. :(