I have the following combo:

                        @(Html.Infragistics().Combo()
                        .ID("EmployeeIDs")
                        .Virtualization(true)
                        .AutoComplete(true)
                        .FilteringType(ComboFilteringType.Local)
                        .FilteringCondition(ComboFilteringCondition.StartsWith)
                        .Width("100%")
                        .Height("34px")
                        .ValueKey("EmployeeID")
                        .TextKey("EmpName")
                        .MultiSelectionSettings(s => {
                            s.Enabled(true);
                            s.ShowCheckBoxes(true);
                        })
                        .DataSourceUrl(Url.Action("employee-combo-data", "Common"))
                        .DataBind()
                        .Render()
                        )

When I try to set the selected values in the list using  $('#EmployeeIDs').igCombo('value', ModelEmployeeIDs); where ModelEmployeeIDs is a string array, only the first item in the array is selected. When I try items = $('#EmployeeIDs').igCombo('itemsFromValue', ModelEmployeeIDs); the same thing happens, only first item is returned.