public ActionResult ImportFile(string username, string file)
{
var service = new TransactionService();
var user = service.GetUserByUserId(username);
var base64EncodedBytes = System.Convert.FromBase64String(file);
service.ImportTransactions(user, System.Text.Encoding.UTF8.GetString(base64EncodedBytes), TransactionProviderType.OFXTransactionProvider);
user = service.GetUserByUserId(username);
return PartialView("TransactionList", user.Transactions);
}