Microsoft.Graph Nuget - 'DeltaResponse' is obsolete

Question

I have upgraded my Nuget package Microsoft.Graph in .net core 8 from version 5.28.0 to 5.42.0 and am getting the following warnings:

• 'DeltaResponse' is obsolete: 'This class is obsolete. Use {TypeName} instead.'
• 'DeltaRequestBuilder.GetAsync(Action<RequestConfiguration<DeltaRequestBuilder.DeltaRequestBuilderGetQueryParameters>>?, CancellationToken)' is obsolete: 'This method is obsolete. Use {TypeName} instead.'

In the following code:

        public string GetMailFromUserMailbox(string upn, string mailbox, Func<Message, bool> iterator, string? delta = null)
        {
            var messages = new List<Message>();

            DeltaRequestBuilder drb;
            if (!string.IsNullOrWhiteSpace(delta))
                drb = new DeltaRequestBuilder(delta, Client.RequestAdapter);
            else
            {
                var mailboxId = GetUserMailBoxId(upn, mailbox);
                drb = Client.Users[upn].MailFolders[mailboxId].Messages.Delta;
            }

            var t = drb.GetAsync();
            t.Wait();

            var pageIterator = PageIterator<Message, DeltaResponse?>.CreatePageIterator(
                Client,
                t.Result ?? new DeltaResponse(),
                iterator
            );
            var pt = pageIterator.IterateAsync();
            pt.Wait();

            return pageIterator.Deltalink;
        }

The warning isn't very helpful in identifying the replacement class, has anyone any information on what the replacement method is to achieve this?

Answer 1

Yes, some weird bug in the latest version of SDK. Until it will be fixed:

• replace GetAsync with GetAsDeltaGetResponseAsync
• replace DeltaResponse with DeltaGetResponse

Code:

public string GetMailFromUserMailbox(string upn, string mailbox, Func<Message, bool> iterator, string? delta = null)
{
    var messages = new List<Message>();

    DeltaRequestBuilder drb;
    if (!string.IsNullOrWhiteSpace(delta))
        drb = new DeltaRequestBuilder(delta, Client.RequestAdapter);
    else
    {
        var mailboxId = GetUserMailBoxId(upn, mailbox);
        drb = Client.Users[upn].MailFolders[mailboxId].Messages.Delta;
    }

    var t = drb.GetAsDeltaGetResponseAsync();
    t.Wait();

    var pageIterator = PageIterator<Message, DeltaGetResponse?>.CreatePageIterator(
                Client,
                t.Result ?? new DeltaGetResponse(),
                iterator
            );
    var pt = pageIterator.IterateAsync();
    pt.Wait();

    return pageIterator.Deltalink;
}