Question

I need to start a Task in C# so I’m creating an action object.

private Action<int, int, int> action = (int p1, int p2, int p3) =>
{
    // do some stuff with p1, p2 and p3.
};

However, when I try and create a task from it I realise that new Task can only take an Action or Action<object> and refuses to accept my action with it’s multiple templated arguments.

Do you have any ideas how I can create this task object and have me pass in the args?

Answer 1

Just use a lambda to convert to the right delegate type:

Action<int, int, int> action = (int p1, int p2, int p3) =>
{
    // do some stuff with p1, p2 and p3.
};

//a closure can capture over any values you might want to pass in
Task.Run(() => action(1, 2, 3));

If your think about it, you cannot hand a Action<int, int, int> to Task.Run because you also have to supply parameters. Task.Run cannot know what you want to pass in.