title: Why Masked Textbox Not Working 00-00-1900?
body: <p>I am new to WinForms. </p>
  
  <p>When I am trying to implement the masked text box, I got one error. </p>
  
  <p>I want a mask of <code>00-00-1900</code> where <code>00</code> handle any number, but <code>19</code> is fixed and cannot be overwritten by the user. How do I do that?</p>
  
  <p>Examples of valid input are <code>19-12-1988</code> and <code>12-01-1958</code>.</p>