I am using this example http://www.kendoui.com/code-library/mvc/grid/using-multiselect-in-grid.aspx to put a multiselect in grid, which works great because the TeritoryEditor's data is set from ViewData and all works well, however I would like each multiselect's data source to be set when the parent is expanded, in other words the datasource should be loaded just like the children in the sub grid, I am not exactly sure where /how i should set the multiselect data source on based on parent