title: Disable validation for Kendo DropDownListFor
body: <p>In an ASP.NET MVC 4 application I have a DropDownListFor to show a favourites list. This field is no required to submit the form. The DropDownListFor get the data from a master data table.
  The thing is that when I submit and I haven't choose a favourite from the list, I am not able to disable the valildation.
  This is the kendo DropDownListFor code:</p>
  
  <pre><code>    @{
  IList&lt;Repsol.Portal.PortalClienteDEAC.GLP.Domain.Entities.PedidoFavorito&gt; cmbFavorito = listaPedidoFavorito.ToList(); 
  }
  
  @(Html.Kendo().DropDownListFor(model =&gt; model.pedidoFavorito.IdFavorito)
                      .BindTo(new SelectList(cmbFavorito.Select(s =&gt; new { Key = s.IdFavorito, Value = s.DescFavorito }), "Key", "Value"))
                      .Name("IdFavorito")
                      .OptionLabel(Idioma.Shared.Pedidos_SeleccioneOpcion)
                      )
  </code></pre>
  
  <p>This is the content of the class PedidoFavorito.cs:</p>
  
  <pre><code>public partial class PedidoFavorito
  {
      #region Primitive Properties
  
      public virtual int IdFavorito
      {
          get;
          set;
      }
  
      public virtual string IdContrato
      {
          get;
          set;
      }
  
      public virtual string IdPedido
      {
          get;
          set;
      }
  
      public virtual string DescFavorito
      {
          get;
          set;
      }
  
      public virtual string metadata
      {
          get;
          set;
      }
  
      #endregion
  
  }
  </code></pre>
  
  <p>I've tried so many things but without a positive result.</p>
  
  <p>Thanks in advance!!</p>