另一个.xaml页面上的启用按钮 [英] Enable button on another .xaml page

问题描述

我有一个定义为 Page.xaml 的按钮'ReadMore'.当我单击关闭ThumbnailDetails.xaml的按钮时，如何再次启用它?用户选择一个ListBox项，然后将其定向到ThumbnailDetails.xaml.

I have a button 'ReadMore' defined Page.xaml. How may I enable it again when I click on a button that closes ThumbnailDetails.xaml? Users select an item @ a ListBox and they are directed to ThumbnailDetails.xaml by the way.

以某种方式不起作用?

void NewsList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    StaffNews news = (StaffNews) NewsList.SelectedItem;
    if (news != null)
    {
        DetailsView.DataContext = news;
        DetailsView.Visibility = Visibility.Visible;
        //testing!!!
        ReadMore.IsEnabled = false;
    }                   
}

ThumbnailDetails.xaml.cs

//set the Visibility of the UserControl to "Collapsed" - 
//which will cause it to disappear from the screen and 
//return the user to the content below it:
void CloseBtn_Click(object sender, RoutedEventArgs e)
{
    Visibility = Visibility.Collapsed;

    //testing if button ReadMore will be reenabled on closebtn_clicked
    Page a = new Page();
    a.ReadMore.IsEnabled = true;
}

推荐答案

可能发生的情况是重新加载了Page.xaml，从而导致状态丢失.您如何将它们定向"到另一页?这可能是您的问题，因为Web应用程序是无状态的.

What probably happens is that Page.xaml is reloaded thus state is lost. How do you 'direct' them to the other page? This is probably your problem as web applications are stateless.

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