readonlyBoolean(default: "false")
If set to true, the widget will be readonly and will not allow user input. The widget is not readonly be default and allow user input.
Example - make the widget readonly
<select id="multiselect" multiple="multiple">
    <option>Item1</option>
    <option>Item2</option>
</select>
<script>
$("#multiselect").kendoMultiSelect({
  readonly: true
});
</script>In this article