public static bool NameIsValid(string Name) { string _file = Path.Combine(AppUtility.AppDataPath, "StaticContents/NameRestriction.txt"); string names = File.ReadAllText(_file).ToLower() .Replace(Environment.NewLine, "") .Replace(", ", ",").Replace(", ", ",").Replace(", ", ",") .Replace(" ,", ",").Replace(" ,", ",").Replace(" ,", ","); string[] restricted = AppUtility.StripHtml(names).Split(','); if (restricted.Contains(Name.Trim().ToLower())) { return(false); } return(true); }