Downloading attachments using sample code

[webbexpert]

Hi! Not sure if theres a bug with the Load method; but the following code appears to write a 0 byte file to disk

                // Read 100 mails
                foreach (var email in service.FindItems(WellKnownFolderName.Inbox, new ItemView(100)).Result)
                {
                    if (email.HasAttachments)
                    {
                        var attachmentMessage = EmailMessage.Bind(service, email.Id, new PropertySet(ItemSchema.Attachments)).Result;

                        foreach (var attachment in attachmentMessage.Attachments)
                        {
                            string name = null;

                            if (attachment is FileAttachment)
                            {
                                FileAttachment fileAttachment = attachment as FileAttachment;
                                // Load the attachment into a file.
                                // This call results in a GetAttachment call to EWS.
                                fileAttachment.Load();

                                name = fileAttachment.Name;
                                fileAttachment.Load("C:\\Temp\\" + name);

                                Debug.WriteLine("File attachment name: " + name);
                            }
                            else // Attachment is an item attachment.
                            {
                                ItemAttachment itemAttachment = attachment as ItemAttachment;
                                // Load attachment into memory and write out the subject.
                                // This does not save the file like it does with a file attachment.
                                // This call results in a GetAttachment call to EWS.
                                itemAttachment.Load();

                                Debug.WriteLine("Item attachment name: " + itemAttachment.Name);
                            }
                        }
                    }

                    Debug.WriteLine("Subject: " + email.Subject);
                }

The project I've used for reference is located here:
https://docs.microsoft.com/en-us/previous-versions/office/developer/exchange-server-2010/dd633665(v%3Dexchg.80)

Thanks for your time!

[scara1701]

.Load() is a task, I think your code resumes before this is completed.

Try:
await fileAttachment.Load();

Greetings

[webbexpert]

Hi Scara! Thanks for your reply

I didn't spot the async task, as the example was passing a string param to the synchronous version Load(string)...

Switching to a task and calling Load() fixed the missing content. Thank you!

[LubosVoska]

This works for me

public static void GetAttachmentsFromEmail(ExchangeService service, Item item)
{
	// Bind to an existing message item and retrieve the attachments collection.
	// This method results in an GetItem call to EWS.
	EmailMessage message = EmailMessage.Bind(service, item.Id, new PropertySet(ItemSchema.Attachments));
	// Iterate through the attachments collection and load each attachment.
	foreach (Attachment attachment in message.Attachments)
	{
		if (attachment is FileAttachment)
		{
			FileAttachment fileAttachment = attachment as FileAttachment;
			// Load the attachment into a file.
			// This call results in a GetAttachment call to EWS.
			DirectoryInfo directory = Directory.CreateDirectory("C:\\temp\\");
			fileAttachment.Load("C:\\temp\\" + fileAttachment.Name);			

		}
	}
}

[777seyran]

please add some working code here.I've the same problem with filesize.

[ChrisH-GDG]

Just as an FYI for anyone else who stumbles across this issue... the FileAttachment.Load("outputdir") isn't Async which i think is the issue. I got round it with the below I'd already done the fileattachment validation prior to this stage etc.

 var f1 =  await fileAttachment.Load();
 if (f1 != null)
{
  FileAttachment loaded = f1.First().Attachment as FileAttachment;
  File.WriteAllBytes(outputDirectory + fileAttachment.Name, loaded.Content);
}