protected void ASPxScheduler1_AppointmentViewInfoCustomizing(object sender, DevExpress.Web.ASPxScheduler.AppointmentViewInfoCustomizingEventArgs e)
        {
            Random r = new Random();

            e.ViewInfo.AppointmentStyle.BackColor = Color.Firebrick;
            if (Int32.Parse(e.ViewInfo.Appointment.Id.ToString()) % 2 == 0)
            {
                e.ViewInfo.AppointmentStyle.BackColor = Color.Red;
            }
            if (Int32.Parse(e.ViewInfo.Appointment.Id.ToString()) % 3 == 0)
            {
                e.ViewInfo.AppointmentStyle.BackColor = Color.Blue;
            }
            if (Int32.Parse(e.ViewInfo.Appointment.Id.ToString()) % 5 == 0)
            {
                e.ViewInfo.AppointmentStyle.BackColor = Color.Yellow;
            }
            if (Int32.Parse(e.ViewInfo.Appointment.Id.ToString()) % 7 == 0)
            {
                e.ViewInfo.AppointmentStyle.BackColor = Color.Green;
            }
            if (Int32.Parse(e.ViewInfo.Appointment.Id.ToString()) % 11 == 0)
            {
                e.ViewInfo.AppointmentStyle.BackColor = Color.MediumAquamarine;
            }
        }
 protected void ASPxScheduler1_AppointmentViewInfoCustomizing(object sender, DevExpress.Web.ASPxScheduler.AppointmentViewInfoCustomizingEventArgs e)
 {
     if (e.ViewInfo.Appointment.CustomFields["AppointmentUser"] == null || (e.ViewInfo.Appointment.CustomFields["AppointmentUser"] != null && e.ViewInfo.Appointment.CustomFields["AppointmentUser"].ToString() != ASPxComboBoxUsers.Value.ToString()))
     {
         e.ViewInfo.AppointmentStyle.BackColor = System.Drawing.Color.LightGray;
         e.ViewInfo.AppointmentStyle.ForeColor = System.Drawing.Color.Gray;
     }
 }