title: Centering text vertically and horizontally in TextBlock and PasswordBox in windows store app
body: <p>I am trying to center the text in a TextBlock and PasswordBox.</p>
  
  <p>In TextBlock I use TextAlignment Property to center the text horizontally, but it still close to the top. How to center the text vertically?</p>
  
  <p>And in PasswordBox there is no property associate with the text alignment, how to achieve this??</p>