title: Kendo dropdownlist custom filter
body: <p>I want to filter dropdownlist data on multiple columns. Currenly it filter data based on one column. </p>
  
  <p>Is there any custom way to filter data based on multiple columns?</p>
  
  <p>Code :</p>
  
  <pre><code>$('&lt;input data-bind="value:' + options.field + '"/&gt;')
                          .appendTo(container)
                          .kendoDropDownList({
                           filter: "contains",
  
                          dataTextField:currentComboEditor.fieldName,
                          headerTemplate: dropdownTemplateHTML.getHeaderHTML(dropdownMetadata.columns),
                          valueTemplate: '&lt;span&gt;#:data.'+currentComboEditor.fieldName+'#&lt;/span&gt;',
                          template: dropdownTemplateHTML.getRowTemplate(dropdownMetadata.columns),
                          dataValueField: currentComboEditor.fieldName,
                          dataSource: {
                              data: source
                          } 
                          });
  </code></pre>