Saving attchment as file

Question

Hi

I am using below code to access mail file attachments. I have two questions;

1. How can I only get unread messages?
2. How can I save file attachment into a file?

Thanks

Regards

      var inboxMessages = await graphClient
        .Users[user.Id]
        .MailFolders.Inbox
        .Messages
        .Request()
        .GetAsync();

      foreach(Microsoft.Graph.Message message in inboxMessages) {

        if (message.HasAttachments == true) {
          var attachments = await graphClient
            .Users[user.Id]
            .Messages[$ "{message.Id}"]
            .Attachments
            .Request()
            .GetAsync();

          foreach(var attachment in attachments) {
            if (attachment is FileAttachment) {
              FileAttachment fileAttachment = attachment as FileAttachment;

              //Save fileAttachment content to file here

            }
          }
        }
      }

Answer 1

• For unread messages you can make the API call like this - https://graph.microsoft.com/v1.0/me/mailFolders/Inbox/messages?$filter=isRead ne true&$count=true
• Get the attachments using as per the document and save it to the file system. You can download the attachment from the URI.