在ASP.NET MVC的Kendo Scheduler中将某些约会标记为不可选

@(Html.Kendo().Scheduler<Appointment>()
      .Name("scheduler")
      .Date(new DateTime(2022, 1, 1))
      .DataSource(ds => ds
          .Model(m => m.Id(f => f.AppointmentID))
          .Read("Read", "Scheduler")
          .Create("Create", "Scheduler")
          .Destroy("Destroy", "Scheduler")
          .Update("Update", "Scheduler")
      )
)

public class Appointment
{
    public int AppointmentID { get; set; }
    public string Title { get; set; }
    public DateTime Start { get; set; }
    public DateTime End { get; set; }
    public bool IsSelectable { get; set; }
}

@(Html.Kendo().Scheduler<Appointment>()
      .Name("scheduler")
      .Date(new DateTime(2022, 1, 1))
      .DataSource(ds => ds
          .Model(m => m.Id(f => f.AppointmentID))
          .Read("Read", "Scheduler")
          .Create("Create", "Scheduler")
          .Destroy("Destroy", "Scheduler")
          .Update("Update", "Scheduler")
      )
      .Views(views =>
      {
          views.DayView();
          views.WeekView();
          views.MonthView();
      })
      .Editable(true)
      .EventTemplate("# if (IsSelectable) { #" +
                    "<div>#: title #</div>" +
                    "# } else { #" +
                    "<div class='non-selectable'>#: title #</div>" +
                    "# } #")
)

.non-selectable {
    color: gray;
}