title: Kendo UI DropDownList undefined method Filter
body: <p>I'm trying to use .NET MVC Kendo DropDownList (Razor) with Filter functionality - as described on official Teleriks page here: </p>
  
  <p><a href="http://demos.telerik.com/aspnet-mvc/dropdownlist/serverfiltering" rel="nofollow">http://demos.telerik.com/aspnet-mvc/dropdownlist/serverfiltering</a>.</p>
  
  <p>My View contains:</p>
  
  <pre><code>@(Html.Kendo().DropDownList()
      .Name("Product")
      .DataTextField("ProductName")
      .DataValueField("Id")
      .Filter("startswith")
      .BindTo(Model.SchemataEnumerable)
      .Value(Model.SelectedSchemaId.ToString())
  )
  </code></pre>
  
  <p>But when I run the page, the error message coming is :</p>
  
  <blockquote>
    <p>CS1061: 'Kendo.Mvc.UI.Fluent.DropDownListBuilder' does not contain a definition for 'Filter' and no extension method 'Filter' accepting a first argument of type 'Kendo.Mvc.UI.Fluent.DropDownListBuilder' could be found (are you missing a using directive or an assembly reference?)</p>
  </blockquote>
  
  <p>Can somebody help to solve this issue? What is wrong?</p>
  
  <p>Thanks</p>