Receiving Input with Buttons
In most Windows Phone XAML apps, buttons are the most commonly used element for receiving user input. Ordinarily, a button initiates an action when a user taps it. Unlike Silverlight for the browser, the minimum size of the
Button has been increased, making it more amenable to touch. The shape is usually rectangular, and the standard layout allows for either text or an image to be displayed as content.
Buttons support three visibility states: rest (the default state), pressed, and disabled. Unlike Silverlight for the browser, however, there is no visible focus state.
VerticalAlignment properties both default to
Vertical size, ...