Question

How can I run a Task that return value and takes a parameter? I see that there is an overloaded method Task.Run<TResult>(Func<TResult>) but how I can pass a parameter there?

Answer 1

Func<TResult> doesn’t take a parameter. Typically you would capture the parameter using a lambda expression instead. For example:

public void DoSomething(string text)
{
    Task<int> task = Task.Run(() => text.Length);
    ...
}

Here text is a captured variable… so even though you’re just creating a Func<int>, it’s using the method parameter.