[Windows 8] How to show or hide the components with windows store app by C#

Example

private void PlayMedia(object sender, MouseButtonEventArgs args)
{
    pauseBTN.Visibility = Visibility.Visible;
    playBTN.Visibility = Visibility.Collapsed;

    media.SpeedRatio = 1.0;
    media.Play();
}

XAML Attribute Usage

<uiElement Visibility="Visible" .../>

or

<uiElement Visibility="Collapsed" .../>

The default value is Visible

UIElement.Visibility Property

Member name	Description
Visible	Display the element.
Collapsed	Do not display the element

reference:

http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.uielement.visibility