How to enable unobtrusive validation for GridView using the EditForm template

The example illustrates how to implement unobtrusive validation for GridView editors. Create an Edit Form template that contains a form and all necessary editors. Corresponding validation attributes will be rendered for the template.
The main requirement is that the updating should be performed using a helper script. In the script block, we prepare validation conditions and check them for the form (that is located within the Edit Form template). If all editors are valid, the grid's UpdateEdit command is invoked.

[JScript]
function UpdateGridView(){
   PrepareValidationScripts();var validator = $.data($('#frmProduct')[0], 'validator');if(validator.form())
       grid.UpdateEdit();}function PrepareValidationScripts(){var form = $('#frmProduct');if(form.executed)return; 
   form.removeData("validator");
   $.validator.unobtrusive.parse(document);
   form.executed = true;}

GridView - EditForm template - How to enable Microsoft MVC validation
GridView - How to perform a custom client side unobtrusive validation for the EditForm template using a custom attribute