C# ProgressDialogController mahapps，关闭弹出窗口时出现问题

我正在使用Mahapps Metro创建一个WPF项目

我的问题是，我将从DetailPage.xaml框架启动，该框架嵌入MainWindow.xaml中，mahapps提供了等待模式。 所以我用了两种方法打开和关闭，但最后他说这不再是对话。 有人有解决办法吗

框架中的我的代码

DetailPage.xaml

private void Meeting_Click(object sender, RoutedEventArgs e)
{
    MainWindow w = (MainWindow)App.Current.MainWindow;
    w.showMessaggeAsyncFromMainWindow();


    var MIDClick = sender as Button;
    String MID = MIDClick.Tag as String;

    ...mycode...                

    w.closeMessaggeAsyncFromMainWindow();
}

public ProgressDialogController dialog;

public async Task showMessaggeAsyncFromMainWindow()
{
    dialog = await this.ShowProgressAsync(Properties.strings.attendi, Properties.strings.aggiornamentoMeetingsInCorso, false) as ProgressDialogController;
}

public async Task closeMessaggeAsyncFromMainWindow()
{
    await dialog.CloseAsync();
}

main window.xaml中的我的代码（MetroWindow）

我的错误：

这里的问题是，您正在执行一个“点火并忘记”（
异步void
）。换句话说，您正在调用
showmessaggeasyncfrommain窗口
，并在启动
对话框
之前，在调用
closeMessaggeasyncfrommain窗口
后重新启动

解决方案：

private async void Meeting_Click(object sender, RoutedEventArgs e)
{
    MainWindow w = (MainWindow)App.Current.MainWindow;
    await w.showMessaggeAsyncFromMainWindow();


    var MIDClick = sender as Button;
    String MID = MIDClick.Tag as String;

    ...mycode...                

    await w.closeMessaggeAsyncFromMainWindow();
}

main窗口中的代码。xaml

private void Meeting_Click(object sender, RoutedEventArgs e)
{
    MainWindow w = (MainWindow)App.Current.MainWindow;
    w.showMessaggeAsyncFromMainWindow();


    var MIDClick = sender as Button;
    String MID = MIDClick.Tag as String;

    ...mycode...                

    w.closeMessaggeAsyncFromMainWindow();
}

public ProgressDialogController dialog;

public async Task showMessaggeAsyncFromMainWindow()
{
    dialog = await this.ShowProgressAsync(Properties.strings.attendi, Properties.strings.aggiornamentoMeetingsInCorso, false) as ProgressDialogController;
}

public async Task closeMessaggeAsyncFromMainWindow()
{
    await dialog.CloseAsync();
}

有了这个解决方案，你就不会做一个“失火而忘记”的事情。您正在等待对话框以
wait
打开和关闭

快乐编码：）
这里的问题是你在做一个“点火并忘记”（
异步void
）。换句话说，您正在调用
showmessaggeasyncfrommain窗口
，并在启动
对话框
之前，在调用
closeMessaggeasyncfrommain窗口
后重新启动

解决方案：

private async void Meeting_Click(object sender, RoutedEventArgs e)
{
    MainWindow w = (MainWindow)App.Current.MainWindow;
    await w.showMessaggeAsyncFromMainWindow();


    var MIDClick = sender as Button;
    String MID = MIDClick.Tag as String;

    ...mycode...                

    await w.closeMessaggeAsyncFromMainWindow();
}

main窗口中的代码。xaml

private void Meeting_Click(object sender, RoutedEventArgs e)
{
    MainWindow w = (MainWindow)App.Current.MainWindow;
    w.showMessaggeAsyncFromMainWindow();


    var MIDClick = sender as Button;
    String MID = MIDClick.Tag as String;

    ...mycode...                

    w.closeMessaggeAsyncFromMainWindow();
}

public ProgressDialogController dialog;

public async Task showMessaggeAsyncFromMainWindow()
{
    dialog = await this.ShowProgressAsync(Properties.strings.attendi, Properties.strings.aggiornamentoMeetingsInCorso, false) as ProgressDialogController;
}

public async Task closeMessaggeAsyncFromMainWindow()
{
    await dialog.CloseAsync();
}

有了这个解决方案，你就不会做一个“失火而忘记”的事情。您正在等待对话框以
wait
打开和关闭

快乐编码：）
如果有人想使用对话框取消按钮关闭它

        var settings = new MetroDialogSettings()
        {

            NegativeButtonText = "cancel",
            DialogMessageFontSize = 25,
            DialogTitleFontSize = 25,
            DialogResultOnCancel = MessageDialogResult.Canceled,

        };
        ProgressDialogController controller =
                await this.ShowProgressAsync("Title", "Message", true, settings);
        controller.SetCancelable(true);

        controller.Canceled += controller_Canceled;

        //after your job

        if(controller.IsOpen)
             await controller.CloseAsync();

这是取消活动

    private async void controller_Canceled(object sender, EventArgs e)
    {
        ProgressDialogController controller_ = (ProgressDialogController)sender;
        await controller_.CloseAsync();
    }

如果有人想使用对话框取消按钮关闭它

        var settings = new MetroDialogSettings()
        {

            NegativeButtonText = "cancel",
            DialogMessageFontSize = 25,
            DialogTitleFontSize = 25,
            DialogResultOnCancel = MessageDialogResult.Canceled,

        };
        ProgressDialogController controller =
                await this.ShowProgressAsync("Title", "Message", true, settings);
        controller.SetCancelable(true);

        controller.Canceled += controller_Canceled;

        //after your job

        if(controller.IsOpen)
             await controller.CloseAsync();

这是取消活动

    private async void controller_Canceled(object sender, EventArgs e)
    {
        ProgressDialogController controller_ = (ProgressDialogController)sender;
        await controller_.CloseAsync();
    }