title: make textbox data entry by calendat extender only - ASP.NET 4.0, C#
body: <p>If using a calendar extender to enter a date to a textbox, is there any way to disable direct typing to the textbox? I want to force users to use the calendar rather than typing over a date and thereby possibly entering a date with an incorrect format.</p>
  
  <p>thanks </p>
  
  <p>T</p>