<div class="col control-section">
    <div class="content-wrapper">
        @(Html.EJS().Schedule("schedule")
            .Width("100%")
            .Height("650px")
            .EventRendered("onEventRendered")
            //.EventSettings(new ScheduleEventSettings { DataSource = ViewBag.datasource })
            .EventSettings(e => e.DataSource(d => d.Url("Home/GetAppointmentData").CrudUrl("Home/SaveAppointmentData").Adaptor("UrlAdaptor").CrossDomain(true)))
            .SelectedDate(DateTime.Now).Render()
            )
    </div>
</div>

public class AppointmentData
{
    public int Id { get; set; }
    public string Subject { get; set; }
    public string Location { get; set; }
    public DateTime StartTime { get; set; }
    public DateTime EndTime { get; set; }
    public string CategoryColor { get; set; }
}

Uncaught SyntaxError: Unexpected token < in JSON at position 0
at JSON.parse (<anonymous>)
at Object.parseJson (ej2.min.js:10)
at e.onSuccess (ej2.min.js:10)
at e.successHandler (ej2.min.js:10)
at e.stateChange (ej2.min.js:10)
at XMLHttpRequest.t.httpRequest.onreadystatechange (ej2.min.js:10)