[scolty]

Evening,

Im trying to get a bool returned from a task but it keeps displaying the following warning.

Quote

Not all code paths return a value in lambda expression of type 'System.Func<bool>'

Here is the code. Note: If i remove the 2 <bool> then it works fine except it doesnt return a value.

public void CallMethodCallAsync(int initial, int final, string filePath)
        {
            Task<bool> tsk = Task.Factory.StartNew<bool>(() =>
            {
                MethodCall(initial, final, filePath);
            });
        }

        public bool MethodCall(int initial, int final, string filePath)
        {
            return true;
        }

any pointers would be appreciated.

Thanks

[janne_panne]

You are missing a return keyword. It has to be used since your lambda is multi line. So this would be correct:

            Task<bool> tsk = Task.Factory.StartNew<bool>(() =>
            {
                return MethodCall(initial, final, filePath);
            });

In one line lambdas it's not required so this works:

            Task<bool> tsk = Task.Factory.StartNew<bool>(() => MethodCall(initial, final, filePath));

[scolty]

Morning Janne,
Thanks alot bro, ive spent a good few hrs scanning the web/books trying to find a similar example but they either returned a value or called a method with parameters. I cant believe how simple the answer was!

Thanks again

[sbarnes]

Thanks, all. Spent considerably less than several hours once I resorted to googling this very error message AND finding this post.