Hello Mir Majeed,

Thank you for contacting us.

Below you will find code snippet that is showing simple implementation of the scenario that you've mentioned.

View:

@(Html.Infragistics().ComboFor(item => item.LocationID)

  .Width("200px")

  .DataSourceUrl(Url.Action("ComboDataLocation"))

     .MultiSelectionSettings(ms => {

     ms.Enabled(true);

     ms.ShowCheckBoxes(true);

      })

  .ValueKey("LocationID")

  .TextKey("Country")

     .DataBind()

     .Render()

)

Controller:

[ActionName("index")]

public ActionResult Index()

{

  Factory factory = new Factory();

  List<ComboExample.Models.Location> locations = factory.GetLocation();

  return View("MultiSelection", locations.First<ComboExample.Models.Location>());

}