Cascade

<input id="multicolumncombobox" />
<script>
$("#multicolumncombobox").kendoMultiColumnComboBox({
   dataSource: [
    { id: 1, name: "Apples" },
    { id: 2, name: "Oranges" }
  ],
  columns: [
    { field: "name" },
    { field: "id" }
  ],
  dataTextField: "name",
  dataValueField: "id",
  cascade: function() {
    // Handle the event
  }
});
</script>

<input id="multicolumncombobox" />
<script>
function multicolumncombobox_cascade(e) {
    // Handle the event
}
$("#multicolumncombobox").kendoMultiColumnComboBox({
   dataSource: [
    { id: 1, name: "Apples" },
    { id: 2, name: "Oranges" }
  ],
  columns: [
    { field: "name" },
    { field: "id" }
  ],
  dataTextField: "name",
  dataValueField: "id",
});
var multicolumncombobox = $("#multicolumncombobox").data("kendoMultiColumnComboBox");
multicolumncombobox.bind("cascade", multicolumncombobox_cascade);
</script>