C# 在ViewModel WPF中将commandparameter传递给Backgroundworker

我的WPF应用程序的主窗口上有许多按钮。这些按钮的命令应具有相同的实现/功能，但根据按下的按钮，功能访问的文件/路径会发生变化。如何使用CommandParameter从ViewModel中检测单击了哪个按钮？如何在方法Dowork中使用此参数？ 在本例中，Button1的CommandParameter称为“Button1”，Button2的CommandParameter称为“Button2”

她是我的ViewModel中Backgroundworker的代码：

public ViewModel()
    {
        ...

        this.instigateWorkCommand = new DelegateCommand(o => this.worker.RunWorkerAsync(), o => !this.worker.IsBusy);
        this.worker = new BackgroundWorker();
        this.worker.DoWork += this.DoWork;
        this.worker.ProgressChanged += this.ProgressChanged;
        this.worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_Completeted);
        this.worker.WorkerReportsProgress = true;
    }

private void DoWork(object sender, DoWorkEventArgs e)
    {
        // if (parameter.ToString().contains("button1")...
        // if (parameter.ToString().contains("button2")...
    }

她是我的ViewModel中的嫁妆代码：

public ViewModel()
    {
        ...

        this.instigateWorkCommand = new DelegateCommand(o => this.worker.RunWorkerAsync(), o => !this.worker.IsBusy);
        this.worker = new BackgroundWorker();
        this.worker.DoWork += this.DoWork;
        this.worker.ProgressChanged += this.ProgressChanged;
        this.worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_Completeted);
        this.worker.WorkerReportsProgress = true;
    }

private void DoWork(object sender, DoWorkEventArgs e)
    {
        // if (parameter.ToString().contains("button1")...
        // if (parameter.ToString().contains("button2")...
    }

通常使用该方法将参数传递给

DoWork

方法

this.worker.RunWorkerAsync("button1");

在

dowworkeventargs

中，属性包含传递给方法RunWorkerAsync的值

private void DoWork(object sender, DoWorkEventArgs e)
{
    if (e.Argument == "button1"){

    }
}

---

我建议，当您

使用任何按钮运行
worker时，将参数作为对象传递给您的方法。
请查看此处