.DataSource(ds =>
{
    ds.Model(model => model.Id(x => x.Id));
    ds.Read(read => read.Action("Lister", "Calendrier").Data("getAdditionalData"));
})

function getAdditionalData() {
    var scheduler = $("#schedulerCalendrier").data("kendoScheduler");

    var result = {
        start: scheduler.view().startDate().toISOString(),
        end: scheduler.view().endDate().toISOString()
    }

    return result;
}

public ActionResult Lister([DataSourceRequest]DataSourceRequest request, DateTime start, DateTime end)