How to: Programmatically create appointments
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
This example creates an appointment and adds recipients to the appointment meeting request.
Applies to: The information in this topic applies to VSTO Add-in projects for Outlook. For more information, see Features available by Office application and project type.
Example
private void AddAppointment()
{
try
{
Outlook.AppointmentItem newAppointment =
(Outlook.AppointmentItem)
this.Application.CreateItem(Outlook.OlItemType.olAppointmentItem);
newAppointment.Start = DateTime.Now.AddHours(2);
newAppointment.End = DateTime.Now.AddHours(3);
newAppointment.Location = "ConferenceRoom #2345";
newAppointment.Body =
"We will discuss progress on the group project.";
newAppointment.AllDayEvent = false;
newAppointment.Subject = "Group Project";
newAppointment.Recipients.Add("Roger Harui");
Outlook.Recipients sentTo = newAppointment.Recipients;
Outlook.Recipient sentInvite = null;
sentInvite = sentTo.Add("Holly Holt");
sentInvite.Type = (int)Outlook.OlMeetingRecipientType
.olRequired;
sentInvite = sentTo.Add("David Junca ");
sentInvite.Type = (int)Outlook.OlMeetingRecipientType
.olOptional;
sentTo.ResolveAll();
newAppointment.Save();
newAppointment.Display(true);
}
catch (Exception ex)
{
MessageBox.Show("The following error occurred: " + ex.Message);
}
}