Custom Validator for RadDateTimePicker

[Sachin]

 Is there are a way to do custom validation on the client side for RadDateTimePicker (tie a custom validator). We want to prevent users from entering a date that is greater than the current date/time and want to do it on the clientside.

[Princy]

Hello,

Give a try in ClientValidationFunction of CustomValidator. Here is the sample code.
JS:

<script type="text/javascript">
    // ClientValidationFunction of CustomValidator
  function ClientValidationFunction1(sender, args)
    {
      var datepicker = $find("<%=RadDatePicker1.ClientID%>");
       var dt=datepicker.get_dateInput();
       // your code
    }
</script>

Thanks,
Princy.