title: Why is Kendo dropDownList undefined
body: <p>I want to populate a Kendo dropdownlist with data from a database.</p>
  
  <p>That's what I call the "frwMantenimientoEmpresas.aspx / SelectProvincias" method.</p>
  
  <p>My problem is that the value "undefined" after making the call, in the dropdownlist appears ...</p>
  
  <pre class="lang-js prettyprint-override"><code>dataSource1 = new kendo.data.DataSource({
        serverFiltering: true,
        transport: {
            read: {
                beforeSend: function (req) {
                    //alert("");
                },
                async: false,
                url: "frwMantenimientoEmpresas.aspx/SelectProvincias",
                type: "POST",
                dataType: "json",
                contentType: "application/json; charset=utf-8"
            }
        },
        schema: {
            model: {
                fields: {
                    UIDProvincia: { type: "int" },
                    Nombre: { type: "string" }
  
                }
            }
        }
  });
  
  $("#dropProv").kendoDropDownList({
      dataSource:dataSource1,
      dataTextField: "Nombre",
      dataValueField: "UIDProvincia",
      autoBind: true,
  });
  </code></pre>
  
  <p>The read method calls the server SelectProvincias method correctly..</p>
  
  <p>At this point dropDownList = undefined??</p>