ASP.Net 2012 Unobtrusive Validation with jQuery

Question

I was playing with Visual Studio 2012 and I created an empty ASP.Net Web Application, when I tried to add the traditional validator controls to a n

Answer 1

In "configuration file" instead this lines:

by this lines:

This error because in version 4.0 library belong to "asp:RequiredFieldValidator" exist but in version 4.5 library not exist so you need to add library by yourself