Change message subject

The following example shows you how to use the Query parameter to search for messages with specified subject and update the subject.

C# example

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Independentsoft.Graph;
using Independentsoft.Graph.Mails;
using Independentsoft.Graph.Users;
using Independentsoft.Graph.QueryOptions;

namespace ConsoleApp1
{
    class Program
    {
        static async Task Main()
        {
            try
            {
                GraphClient client = new GraphClient();

                client.ClientId = "63333333-209e-454e-b7bd-55a4d201270f";
                client.Tenant = "independentsoft.onmicrosoft.com";
                client.ClientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

                Query query = new Query();
                query.Top = 999;
                query.Filter = new IsEqualTo(MessagePropertyName.Subject, "Test");

                IList<Message> messages = await client.GetMessages(StandardMailboxFolder.Inbox, new UserId("info@independentsoft.onmicrosoft.com"), query);

                for (int i = 0; i < messages.Count; i++)
                {
                    Console.WriteLine("Id = " + messages[i].Id);
                    Console.WriteLine("Subject = " + messages[i].Subject);

                    //Change subject
                    messages[i].Subject = "New Subject";

                    Message updatedMessage = await client.UpdateMessage(messages[i], new List<String>() { MessagePropertyName.Subject }, new UserId("info@independentsoft.onmicrosoft.com"));
                }

                Console.Read();
            }
            catch (GraphException ex)
            {
                Console.WriteLine("Error: " + ex.Code);
                Console.WriteLine("Message: " + ex.Message);
                Console.Read();
            }
        }
    }
}

VB example

Imports Independentsoft.Graph
Imports Independentsoft.Graph.Users
Imports Independentsoft.Graph.Mails
Imports Independentsoft.Graph.QueryOptions

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

            Dim task = New Task(AddressOf Run)

            ' Start and wait for task to end.
            task.Start()
            Console.Read()

        End Sub

        Shared Async Sub Run()
            Try

                Dim client As GraphClient = New GraphClient()

                client.ClientId = "63333333-209e-454e-b7bd-55a4d201270f"
                client.Tenant = "independentsoft.onmicrosoft.com"
                client.ClientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

                Dim query As Query = New Query()
                query.Top = 999
                query.Filter = New IsEqualTo(MessagePropertyName.Subject, "Test")

                Dim messages As IList(Of Message) = Await client.GetMessages(StandardMailboxFolder.Inbox, new UserId("info@independentsoft.onmicrosoft.com"), query);

                For i As Integer = 0 To messages.Count - 1
                    Console.WriteLine("Id = " & messages(i).Id)
                    Console.WriteLine("Subject = " & messages(i).Subject)

                    ''Change subject
                    messages(i).Subject = "New Subject"

                    Dim updatedMessage As Message = Await client.UpdateMessage(messages(i), New List(Of String)() From {MessagePropertyName.Subject}, New UserId("info@independentsoft.onmicrosoft.com"))
                Next

                Console.Read()

            Catch ex As GraphException
                Console.WriteLine("Error: " + ex.Code)
                Console.WriteLine("Error: " + ex.Message)
                Console.Read()
            End Try
        End Sub

    End Class
End Namespace

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Graph .NET > Tutorial > Change message subject

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