在另一个.xaml页面上启用按钮

Question

我有一个按钮'ReadMore'定义Page.xaml。当我点击关闭ThumbnailDetails.xaml的按钮时，我如何再次启用它?用户选择一个项目@ a ListBox，然后他们被引导到ThumbnailDetails.xaml。

为什么它不工作?

Page.xaml.cs:

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;
}

Answer 1

可能发生的是Page。Xaml被重新加载，因此状态丢失。如何将他们"引导"到另一个页面?这可能是你的问题，因为web应用程序是无状态的。