Create a Task with an Action multiple parameters

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时光取名叫无心
时光取名叫无心 2021-01-06 14:42

I want to add multiple parameter in a Task containing Action. I reviewed the existing stack-overflow question Create a Task with an Action

Kindly assist me

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  • 2021-01-06 14:53

    Create another lambda which execute your action and pass parameters there

    var task = Task.Run(() => youraction(parameter1, parameter2));
    

    In particular your case you don't need create a lot of tasks and threads which will be created with Task.Run or StartNew

    If you change your method to be asynchronous without wasting threads with Thread.Sleep

    public static async Task<string> LoadAsync(string message, int count)
    {
        await Task.Delay(1500);
    
        var countOutput = count == 0 ? string.Empty : count.ToString();
        var output = $"{message} {countOUtput}Exceuted Successfully !";
        Console.WriteLine(output);
    
        return "Finished";
    }
    

    Then you can call it anywhere without Task.Run

    await LoadAsync("", 0);
    

    Your LoadAsync method already returning a Task<string> which you can start and "await" whenever you want. So you don't need to use Task.Run to start another Task(thread in your case).

    var task = LoadAsync("param1", 3);
    // do something  else
    var result = await task;
    
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  • 2021-01-06 15:13

    Just pass the parameters like this.

    Action<string, int> action = async (msg, count) => await LoadAsync(msg, count);
    Task task = new Task(() => action("", 0)); // pass parameters you want
    

    If you want to also get return value

    Func<string, int, Task<string>> func = LoadAsync;
    Task<string> task = func("", 0); // pass parameters you want
    
    var result = await task; // later in async method
    
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