public object Send(ProjectCommentSending model)
        {
            try
            {
                User user = _investContext.CurrentUser;
                ProjectComment comment = new ProjectComment()
                    {
                        FromUserID = user.Id,
                        CommentText = model.Comment,
                        CommentDate = DateTime.Now,
                        ProjectID = model.ProjectID
                    };

                _projectCommentRepository.Insert(comment);
                _projectCommentRepository.SaveChanges();

                return new { CommentDate = comment.CommentDate.ToString("dd.MM.yyyy HH:mm:ss") };
            }
            catch
            { return false; }
        }
 public void Update(ProjectComment model)
 {
     if (model == null)
         throw new ArgumentNullException("message");
     projectCommentRepository.Update(model);
 }