cascadeFromString
Use it to set the Id of the parent ComboBox widget. Help topic showing how cascading functionality works
Example
<input id="parent" /> <input id="child" /> <script> $("#parent").kendoComboBox({ dataTextField: "parentName", dataValueField: "parentId", dataSource: [ { parentName: "Parent1", parentId: 1 }, { parentName: "Parent2", parentId: 2 } ] }); $("#child").kendoComboBox({ cascadeFrom: "parent", dataTextField: "childName", dataValueField: "childId", dataSource: [ { childName: "Child1", childId: 1, parentId: 1 }, { childName: "Child2", childId: 2, parentId: 2 }, { childName: "Child3", childId: 3, parentId: 1 }, { childName: "Child4", childId: 4, parentId: 2 } ] }); </script>In this article