File used in attachment is being locked after send #269

            public async Task Consume(ConsumeContext<EmailMessage> context)
	{
		await Task.Delay(5000); // Put this in case there needs to be a delay form the last email send to allow release of file.

		_logger.LogInformation("Email recieved");

		var message = context.Message;

		var _email = _emailFactory.Create(); // _emailFactory is injected into the class. I had IFluentEmail injected before, but tried this for a fresh email each time.

		_email.BCC(message.BccAddresses)
			.CC(message.CcAddresses)
			.To(message.ToAddresses)
			.Body(message.Body, message.IsHtml);

		if (message.HasAttachment)
		{
			GetAttachment(message, _email); // Exception happens in here when it tries to delete the file from the previous send.
		}

		_logger.LogInformation("Sending Email.");

		try
		{
			var response = await _email.SendAsync();

			if (response.Successful)
			{
				_logger.LogInformation("Sent");
			}
			else
			{
				foreach (var responseErrorMessage in response.ErrorMessages)
				{
					_logger.LogInformation(responseErrorMessage);
				}
			}
		}
		catch (Exception e)
		{
			_logger.LogError(e, "Error Sending email");
		}
	}

            private bool GetAttachment(EmailMessage message, IFluentEmail _email)
	{
		if (!string.IsNullOrEmpty(message.AttachmentPath))
		{
			_logger.LogInformation("Getting attachment");

			var pathSplit = message.AttachmentPath.Split(';');

			using var ftp = new FtpConnection(_logger, pathSplit[0], pathSplit[1], pathSplit[2]);

			if (ftp.OpenConnection())
			{
				var tempPath = @"D:\Temp\Services\Email";
				var fileName = Path.GetFileName(pathSplit[3]);
				var fullPath = Path.Combine(tempPath, fileName);

				if (File.Exists(fullPath))
				{
					_logger.LogInformation("File exists in temp folder so deleting.");

					try
					{
						File.Delete(fullPath); // IO Exception happens here
					}
					catch (Exception e)
					{
						Console.WriteLine(e);
					}
				}

				_logger.LogInformation($"Downloading File {pathSplit[3]}.");

				ftp.DownloadFile(pathSplit[3], fullPath);

				if (File.Exists(fullPath))
				{
					_email.AttachFromFilename(fullPath, GetContentTypeFromFileName(fullPath));
				}
				else
				{
					_logger.LogError("Email could not be sent, file attachment did not download.");
					return false;
				}
			}
			else
			{
				return false;
			}
		}
		else
		{
			return false;
		}

		return true;
	}