BackgroundWorker报告另一个类的进度

发布于 2024-11-03 09:44:13 字数 857 浏览 5 评论 0原文

我有一个类似于此链接中最后一个代码的代码：

http: //msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.aspx

但是 ComputeFibonacci 方法位于另一个类中，所以我的 doWork 方法将是这样的：


private void backgroundWorker1_DoWork(object sender, 
            DoWorkEventArgs e)
        {   
            BackgroundWorker worker = sender as BackgroundWorker;

            e.Result = new MyClass().ComputeFibonacci((int)e.Argument, worker, e);
        }

我的代码锁定应用程序当我使用worker.ReportProgress(percentComplete);时永远如此在另一个类中的 fibonaci 方法内部。 我认为问题是 backgroundWorker1_ProgressChanged 在另一个类中，而不是 MyClass 中。

请问我该怎么办？

如果我将斐波那契方法放在同一个类中，则不会出现该问题。但就我而言，将代码放在同一个类中是没有意义的。

谢谢

原文

I have a code similar to the last code in this link:

http://msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.aspx

But the ComputeFibonacci method is inside another class, so my doWork method would be this:


private void backgroundWorker1_DoWork(object sender, 
            DoWorkEventArgs e)
        {   
            BackgroundWorker worker = sender as BackgroundWorker;

            e.Result = new MyClass().ComputeFibonacci((int)e.Argument, worker, e);
        }

My code locks the application for ever when I use the worker.ReportProgress(percentComplete);
inside the fibonaci method which is in another class. I think the problem is that the backgroundWorker1_ProgressChanged is inside another class, instead of MyClass.

What should I do please?

If I put the fibonaci method inside the same class, the problem won't occur. But in my case, doesn't make sence to put the code inside the same class.

Thanks

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糖果控 2024-11-10 09:44:13

让 MyClass 触发一个事件：

public class MyClass
{
    public event ProgressChangedEventHandler ProgressChanged;

    protected virtual void OnProgressChanged(int progress)
    {
        if (ProgressChanged!= null)
        {
            ProgressChanged(this, new ProgressChangedEventArgs(progress, null));
        }
    }

    public int ComputeFibonacci(int input)
    {
        //<Calculate stuff>
        OnProgressChanged(currentProgress);
        //...
        return output;
    }
}

private void backgroundWorker1_DoWork(object sender,
    DoWorkEventArgs e)
{
    BackgroundWorker worker = sender as BackgroundWorker;

    var myClass = new MyClass();
    myClass.ProgressChanged += (s, pe) => worker.ReportProgress(pe.ProgressPercentage);
    myClass.ComputeFibonacci((int)e.Argument);
}

类似这样的事情。

Make MyClass fire an event:

public class MyClass
{
    public event ProgressChangedEventHandler ProgressChanged;

    protected virtual void OnProgressChanged(int progress)
    {
        if (ProgressChanged!= null)
        {
            ProgressChanged(this, new ProgressChangedEventArgs(progress, null));
        }
    }

    public int ComputeFibonacci(int input)
    {
        //<Calculate stuff>
        OnProgressChanged(currentProgress);
        //...
        return output;
    }
}

private void backgroundWorker1_DoWork(object sender,
    DoWorkEventArgs e)
{
    BackgroundWorker worker = sender as BackgroundWorker;

    var myClass = new MyClass();
    myClass.ProgressChanged += (s, pe) => worker.ReportProgress(pe.ProgressPercentage);
    myClass.ComputeFibonacci((int)e.Argument);
}

Something like that.

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