Use one of many overloads to build a new Appointment instance. The example below creates an appointment that starts "Now", extends for one half hour and has summary and descriptions. You can use the StatusId and BackgroundId appointment properties to provide visual feedback in the left edge and background of each appointment.

Copy[C#] Adding a new appointment

Appointment appointment = new Appointment(DateTime.Now, TimeSpan.FromMinutes(30), "Summary", "Description");
appointment.StatusId = 2;
appointment.BackgroundId = 6;
this.radScheduler1.Appointments.Add(appointment);

Copy[VB.NET] Adding a new appointment

Dim appointment As New Appointment(Date.Now, TimeSpan.FromMinutes(30), "Summary", "Description")
appointment.StatusId = 2
appointment.BackgroundId = 6
Me.RadScheduler1.Appointments.Add(appointment)

• To add new a Status to an appointment, the Statuses collection should be used. By default this collection is filled with the following statuses:
• • 1 = Free
  • 2 = Busy
  • 3 = Unavailable
  • 4 = Tentative
• To extend/replace the Statuses collection, use the AppointmentStatusInfo class:

  Note
  Make sure that the IDs of the statues are unique. It is good to add a new status with an ID bigger than the last filled status.

  Copy[C#] Using the AppointmentStatusInfo class

  this.radScheduler1.Statuses.Add(new AppointmentStatusInfo(5, "test", Color.Purple, Color.Purple, AppointmentStatusFillType.Solid));

  Copy[VB.NET] Using the AppointmentStatusInfo class

  Me.RadScheduler1.Statuses.Add(New AppointmentStatusInfo(5, "test", Color.Purple, Color.Purple, AppointmentStatusFillType.Solid))

   
• To add new a Background to an appointment, the Backgrounds collection should be used. By default this collection is filled with the following statuses:
• • 1 = None
  • 2 = Important
  • 3 = Business
  • 4 = Personal
  • 5 = Vacation
  • 6 = MustAttend
  • 7 = TravelRequired
  • 8 = NeedsPreparation
  • 9 = Birthday
  • 10 = Anniversary
  • 11 = PhoneCall
• To extend/replace the Backgrounds collection, use the AppointmentStatusInfo class:

  Note
  Make sure that the IDs of the Backgrounds are unique. It is good to add a new status with an ID bigger than the last filled status.

  Copy[C#] Using the AppointmentStatusInfo class

  this.radScheduler1.Backgrounds.Add(new AppointmentBackgroundInfo(12, "test", Color.Purple));

  Copy[VB.NET] Using the AppointmentStatusInfo class

  Me.RadScheduler1.Backgrounds.Add(New AppointmentBackgroundInfo(12, "test", Color.Purple))

   
• In order to change the background of an appointment, use the Appointment's BackgroundId property and choose a value from a value list. 
• In order to change the status of an appointment, use the Appointment's StatusId property and choose a value of the predefined values list. 
• In order to hide/show an appointment, use the Appointment's Visible property. The value of this property is true by default.
• In order to change Appointment's Summary, Description or Locations strings, use the Summary, Description and Location properties of Appointment class.
• In order to change Appointment's text formatting which will reflect on the Start, End, Summary, Location and Description strings, use the AppointmentTitleFormat property:
  Copy[C#] Using the AppointmentTitleFormat property

  this.radScheduler1.AppointmentTitleFormat = "{0} to {1}, {2} ({3})";

  Copy[VB.NET] Using the AppointmentTitleFormat property

  Me.RadScheduler1.AppointmentTitleFormat = "{0} to {1}, {2} ({3})"

• In order to change Appointment's Start, End, Duration, use the Start, End, Duration properties of Appointment class.
• In order to change Appointment's tool-tip text, use the Appointment's ToolTipText property:
  Copy[C#] Using the ToolTipText property

  appointment.ToolTipText = "Some text";

  Copy[VB.NET] Using the ToolTipText property

  appointment.ToolTipText = "Some text"

• In order to enable/disable Appointment's editing and deleting operations, use the Appointment's AllowEdit and AllowDelete properties.