C# 错误 - 由于可选参数或其他原因？

Question

这是我的代码:

    public void RemovalWorker_Start(Applications app = null, Link link = null)
    {
        BackgroundWorker RemovalWorker = new BackgroundWorker();
        RemovalWorker.DoWork += RemovalWorker_DoWork;
        RemovalWorker.RunWorkerCompleted += RemovalWorker_RunWorkerCompleted;
        RemovalWorker.WorkerSupportsCancellation = true;
        RemovalWorker.RunWorkerAsync(arg);
    }
    private void RemovalWorker_DoWork(object sender, DoWorkEventArgs e)
    {
        var app = e.Argument.GetType();
        if(app.Name == "Applications")
        {
            Applications RemovalAppliction = (Applications)e.Argument;
            RemovalAppliction.RemoveApplication();
            Dispatcher.Invoke(new Action(() =>
            {
                user.RemoveFromMyApps(user._MyApps[listBox_apps.SelectedIndex]);
            }));
            e.Result = "apps";
        }
        else
        {
            Link RemovalLink = (Link)e.Argument;
            RemovalLink.RemoveLink();
            Dispatcher.Invoke(new Action(() =>
            {
                user.RemoveFromMyLinks(user._MyLinks[listBox_links.SelectedIndex]);
            }));
            e.Result = "links";
        }

    }

我正在尝试将一个可选参数传递给我的 RemovalWorker。但是，我收到以下错误:

Inconsistent Accessibility: parameter type 'Applications' is less accessible than method 'MainWindow.RemovalWorker_Start(Applications,Link)'
Inconsistent Accessibility: parameter type 'Link' is less accessible than method 'MainWindow.RemovalWorker_Start(Applications,Link)'

为什么会这样？我是否错误地声明了我的可选参数？我应该如何解决这个问题？ “删除 worker ”是通过单击按钮(点击列表框项目上的删除)来实例化的。我想传递的参数是它是“应用程序”对象还是“链接”对象。

该函数尚未 100% 完成 - 我仍然需要声明我的参数是什么，但是，我目前无法编译。

谢谢大家!

Answer 1

我猜你的 Applications 和 Link 是你自己的类，不是公共(public)类

所以当你在 public void RemovalWorker_Start public 这行与 Applications 和 Link 的 nonpublic 冲突时