Question

what’s the difference between using try catch surrounding a function block that is called by some task and calling try/catch on task.wait(). If i take care of exceptions within the function, do i still need to worry about any exception that might occur from task.wait() ?

var factory = new TaskFactory();
task t1= factory.StartNew(() => funA();
t1.Wait();


void funcA()
{
  try{..}
  .
  .
  catch{..}
}

Or

var factory = new TaskFactory();
task t1= factory.StartNew(() => funA();
try
{
  t1.Wait();
}
catch{....}

void funcA()
{

}

Answer 1

With the first block you provided you wouldn’t be able to catch any of these exceptions that may occur:

• ObjectDisposedException: The Task has been disposed.

• ArgumentOutOfRangeException: timeout is a negative number other than -1 milliseconds, which represents an infinite time-out -or- timeout is greater than MaxValue.

• AggregateException: The Task was canceled -or- an exception was thrown during the execution of the Task.

From Task.Wait() documentation on MSDN