在Parallel.ForEach循环内使用方法

Question

I should use Parallel.ForEach loop, and inside there should be call to method.

Parallel.ForEach(myList, item => {  
   DoSomethingWithItem(item);
 }
);

Should that method be Task or whatever?

private Task DoSomethingWithItem(MyClass item);

Also, this method shouldn't have return type, but I have warning "not all code paths return a value". Tried to put void keyword but seems it doesn't go in same context with Task keyword.

Answer 1

No

Do not make it more complicated than it has to be.

Parallel.ForEach(myList, item => {  
   DoSomethingWithItem(item);
 }
);

is perfectly fine for void DoSomethingWithItem(MyClass item) .

Making it "more" async is overkill at best, counterproductive in the worst case.