将方法传递给后台工作者 dowork

在下面的代码中，有没有一种方法可以不总是订阅 updateWorker_DoWork 方法，而是向其传递这样的方法

public void GetUpdates(SomeObject blah)
{
    //...
    updateWorker.DoWork += new DoWorkEventHandler(blah);
    //...
}


public void GetUpdates()
{
    //Set up worker
    updateWorker.WorkerReportsProgress = true;
    updateWorker.WorkerSupportsCancellation = true;
    updateWorker.DoWork += new DoWorkEventHandler(updateWorker_DoWork);
    updateWorker.RunWorkerCompleted +=
        new RunWorkerCompletedEventHandler(updateWorker_RunWorkerCompleted);
    updateWorker.ProgressChanged +=
        new ProgressChangedEventHandler(updateWorker_ProgressChanged);

    //Run worker
    _canCancelWorker = true;
    updateWorker.RunWorkerAsync();
    //Initial Progress zero percent event
    _thes.UpdateProgress(0);
}

为您RunWorkerAsync()你可以传递任何你喜欢的论点。你可以只放一个Func() or Action()进入它并在你的DoWork()您只需将对象强制转换回该特定类型并调用它即可。

例子是here and here.

private void InitializeBackgroundWorker()
{
    _Worker = new BackgroundWorker();

    // On a call cast the e.Argument to a Func<TResult> and call it...
    // Take the result from it and put it into e.Result
    _Worker.DoWork += (sender, e) => e.Result = ((Func<string>)e.Argument)();

    // Take the e.Result and print it out
    // (cause we will always call a Func<string> the e.Result must always be a string)
    _Worker.RunWorkerCompleted += (sender, e) =>
    {
        Debug.Print((string)e.Result);
    };
}

private void StartTheWorker()
{
    int someValue = 42;

    //Take a method with a parameter and put it into another func with no parameter
    //This is called currying or binding
    StartTheWorker(new Func<string>(() => DoSomething(someValue)));

   while(_Worker.IsBusy)
       Thread.Sleep(1);

   //If your function exactly matches, just put it into the argument.
   StartTheWorker(AnotherTask);
}

private void StartTheWorker(Func<string> func)
{
    _Worker.RunWorkerAsync(func);
}

private string DoSomething(int value)
{
    return value.ToString("x");
}

private string AnotherTask()
{
    return "Hello World";
}