Send meeting update

The following example shows you how to find meeting by subject, update meetings StartTime and EndTime and send meeting update to all attendees.

C# example

using System;
using System.Net;
using System.Collections.Generic;
using Independentsoft.Exchange;

namespace Sample
{
    class Program
    {
        static void Main(string[] args)
        {
            NetworkCredential credential = new NetworkCredential("username", "password");
            Service service = new Service("https://myserver/ews/Exchange.asmx", credential);

            try
            {
                IsEqualTo restriction = new IsEqualTo(AppointmentPropertyPath.Subject, "Meeting");

                FindItemResponse findItemResponse = service.FindItem(StandardFolder.Calendar, restriction);

                Property startTimeProperty = new Property(AppointmentPropertyPath.StartTime, DateTime.Today.AddHours(17));
                Property endTimeProperty = new Property(AppointmentPropertyPath.EndTime, DateTime.Today.AddHours(20));

                IList<Property> properties = new List<Property>();
                properties.Add(startTimeProperty);
                properties.Add(endTimeProperty);

                if (findItemResponse.Items.Count == 1)
                {
                    ItemId itemId = findItemResponse.Items[0].ItemId;

                    itemId = service.UpdateItem(itemId, properties, SendMeetingOption.SendToAllAndSaveCopy);
                }
            }
            catch (ServiceRequestException ex)
            {
                Console.WriteLine("Error: " + ex.Message);
                Console.WriteLine("Error: " + ex.XmlMessage);
                Console.Read();
            }
            catch (WebException ex)
            {
                Console.WriteLine("Error: " + ex.Message);
                Console.Read();
            }
        }
    }
}

VB example

Imports System
Imports System.Net
Imports Independentsoft.Exchange

Namespace Sample
    Class Module1
        Shared Sub Main(ByVal args As String())

            Dim credential As New NetworkCredential("username", "password")
            Dim service As New Service("https://myserver/ews/Exchange.asmx", credential)

            Try

                Dim restriction As New IsEqualTo(AppointmentPropertyPath.Subject, "Meeting")

                Dim findItemResponse As FindItemResponse = service.FindItem(StandardFolder.Calendar, restriction)

                Dim startTimeProperty As New [Property](AppointmentPropertyPath.StartTime, DateTime.Today.AddHours(17))
                Dim endTimeProperty As New [Property](AppointmentPropertyPath.EndTime, DateTime.Today.AddHours(20))

                Dim properties As New List(Of [Property])()
                properties.Add(startTimeProperty)
                properties.Add(endTimeProperty)

                If findItemResponse.Items.Count = 1 Then

                    Dim itemId As ItemId = findItemResponse.Items(0).ItemId

                    itemId = service.UpdateItem(itemId, properties, SendMeetingOption.SendToAllAndSaveCopy)

                End If

            Catch ex As ServiceRequestException
                Console.WriteLine("Error: " + ex.Message)
                Console.WriteLine("Error: " + ex.XmlMessage)
                Console.Read()
            Catch ex As WebException
                Console.WriteLine("Error: " + ex.Message)
                Console.Read()
            End Try

        End Sub
    End Class
End Namespace

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Exchange Web Services .NET > Tutorial > Send meeting update

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