title: asp.net - gridview validation - repeating validation messages issue
body: <p>I have a gridview that contains one to many rows (like most do) - each with an input textbox. Each row has a requiredfieldvalidator against that textbox. When the form is submitted the gridview is validated it is entirely possible that more than one row has an empty textbox. This results in repeating validation messages e.g.</p>
  
  <ul>
  <li>Please provide text for 'Name' field</li>
  <li>Please provide text for 'Name' field</li>
  <li>Please provide text for 'Name' field</li>
  </ul>
  
  <p>Is it possible to consolidate these messages into one message?</p>
  
  <p>I know it possible to create a validator by setting up a validator class and inheriting from BaseValidator class which can be used to validate the gridview as a whole. But I put an image against each row when it is invalid so I should imagine I require separate validators on each row.</p>