Creating a task inside a foreach loop

One way would be to use Parallel.ForEach to do this:

Parallel.ForEach(SomeCollection, x => SomeMethod(x));

The code would wait for all calls of SomeMethod to complete before proceeding, but the individual calls may run in parallel.

If you don't want to wait for the calls to finish, wrap this call in StartNew:

Task.Factory.StartNew(() => Parallel.ForEach(SomeCollection, x => SomeMethod(x)));