c# - data val required not generated using Client Side Validation -

i trying use client side validation in mvc using data annotations. data val attribute not generated , client side validation not working.

my approach :

  public partial class user : baseentity     {         public user()         {             this.userroles = new list<userrole>();         }          public int userid { get; set; }         public string firstname { get; set; }         public string lastname { get; set; } } 

i using above class partial class extension:

 [metadatatype(typeof(usermetadata))]     public partial class user     { }      public class usermetadata     {         [required]         public string firstname { get; set; }         [required]         public string lastname { get; set; } } 

including view :

@using (html.beginform("add", "user", formmethod.post, new { @class = "form-horizontal"})) {     @html.antiforgerytoken()     @html.validationsummary(true)     @html.partial("_userdetails", model)      <div class="col-md-12 col-sm-12 col-xs-12">         <div class="form-group">             <div class="col-md-12 col-sm-12 col-xs-12 pull-left">                 <input type="submit" class="btn btn-primary btn_box" value="add" id="formsubmit" />             </div>         </div>     </div> } 

_userdetails partial view :

<div class="form-group">                             <div class="col-md-4 col-sm-12 col-xs-12">@html.label("first name :", new { @class = "col-sm-12 control-label text-label" })</div>                             <div class="col-md-8 col-sm-12 col-xs-12">@html.textboxfor(m => m.user.firstname, new { @class = "form-control input-fild", @id = "firstname" })</div>                         </div>                         <div class="form-group">                             <div class="col-md-4 col-sm-12 col-xs-12">@html.label("last name :", new { @class = "col-sm-12 control-label text-label" })</div>                             <div class="col-md-8 col-sm-12 col-xs-12">@html.textboxfor(m => m.user.lastname, new { @class = "form-control input-fild", @id = "lastname" })</div>                         </div> 

when run application , see view source "data val" attribute not generated on control use generate in normal [required] attribute.

am missing ? thanks.

can have @ solutions provided question. mvc 4 client side validation not working

also 1 described in blog