title: Angular 2 how disable kendo-dropdownlist
body: <p>I'm trying to get a kendo-dropdownlist disabled (named ddlChargeType). </p>
  
  <p>A user should not be able to directly select a value. But it should be possible to select it programmatically (a valid selection of another dropdown, ddlUoM to trigger the selection of a corresponding ddlChargeType option - this works fine).</p>
  
  <p>So, my question is: how to mark my kendo-dropdownlist ddlChargeType as readonly, or disabled, or ng-disabled? </p>
  
  <p>I couldn't find this in the official documentation: </p>
  
  <p><a href="http://www.telerik.com/kendo-angular-ui/components/dropdowns/dropdownlist/" rel="noreferrer">http://www.telerik.com/kendo-angular-ui/components/dropdowns/dropdownlist/</a></p>
  
  <p>Thanks!</p>