public Guid Create(Nullable <System.Guid> userId, Nullable <byte> type, string textName, string tagName, string iconPath, string description, string userTypes) { if (!IsExists(tagName)) { var hashId = Guid.NewGuid(); int re = (int)db.pb_HashTag_Create( hashId, userId, type, textName, tagName.Trim().ToLower(), iconPath, description, userTypes).Single(); if (re >= 0) { return(hashId); } else { return(Guid.Empty); } } else { return(Guid.Empty); } }