/// <summary> /// Gets Inforamation about specific User /// </summary> /// <param name="surname">User Surname</param> /// <param name="group">User Gruop</param> public string InfoGet(string surname, string group) { tempUser = userHandle.Find((item) => { if (item.Surname == surname && item.AcademGroup == group) { return(true); } else { return(false); } }); return(tempUser?.Details() ?? throw new FormatException("Invalid request")); }