title: how to add asp.net validations in visual studio 2012?
body: <p>I want to use validations in visual studio toolbox, but when I run my code I face with this error. how can I correct it?  </p>
  
  <p>"Web Forms Unobtrusive Validation Mode requires a Script Resource Mapping for 'j query'. Please add a Script Resource Mapping named j query(case-sensitive)."</p>