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required validation MaskedTextBox kendo ui

This is basically used for kendo ui text-box required validation. The code sample as given below.

 <div class="col-sm-8 col-md-6">                   
   @(Html.Kendo().MaskedTextBoxFor(model => model.Name)
        .Name("Name")
        .HtmlAttributes(new
         {                        
            required = "required"
         })
     )
    <span data-for='PhoneNumber' class='k-invalid-msg'></span>                 
</div>

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