Update outlook meeting

private void ThisAddIn_Startup(object sender, System.EventArgs e)

{

Outlook.AppointmentItem agendaMeeting = (Outlook.AppointmentItem)

this.Application.CreateItem(Microsoft.Office.Interop.Outlook.OlItemType.

olAppointmentItem);

if (agendaMeeting != null)

{

agendaMeeting.MeetingStatus =

Microsoft.Office.Interop.Outlook.OlMeetingStatus.olMeeting;

agendaMeeting.Location = "Conference Room";

agendaMeeting.Subject = "Discussing the Agenda";

agendaMeeting.Body = "Let's discuss the agenda.";

agendaMeeting.Start = new DateTime(2005, 5, 5, 5, 0, 0);

agendaMeeting.Duration = 60;

Outlook.Recipient recipient =

agendaMeeting.Recipients.Add("Nate Sun");

recipient.Type =

(int)Outlook.OlMeetingRecipientType.olRequired;

((Outlook._AppointmentItem)agendaMeeting).Send();

}

}

// add

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);

}

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Jignesh Kumar7y ago
Hi Neha,

Try below link,

https://stackoverflow.com/questions/275759/update-an-event-in-outlook-2007-with-an-icalendar-file
Madan Shekar7y ago
more infohttps://docs.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-update-appointments-and-meetings-by-using-ews-in-exchange
Madan Shekar7y ago
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
Outlook.AppointmentItem agendaMeeting = (Outlook.AppointmentItem)
this.Application.CreateItem(Microsoft.Office.Interop.Outlook.OlItemType.
olAppointmentItem);
if (agendaMeeting != null)
{
agendaMeeting.MeetingStatus =
Microsoft.Office.Interop.Outlook.OlMeetingStatus.olMeeting;
agendaMeeting.Location = "Conference Room";
agendaMeeting.Subject = "Discussing the Agenda";
agendaMeeting.Body = "Let's discuss the agenda.";
agendaMeeting.Start = new DateTime(2005, 5, 5, 5, 0, 0);
agendaMeeting.Duration = 60;
Outlook.Recipient recipient =
agendaMeeting.Recipients.Add("Nate Sun");
recipient.Type =
(int)Outlook.OlMeetingRecipientType.olRequired;
((Outlook._AppointmentItem)agendaMeeting).Send();
}
}

// add

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);
}
}