public string GenerateCode(UserConnection userConnection) { var codeMask = SystemSettings.GetValue(userConnection, "UsrPeriodicalPublicationCodeMask").ToString(); var lastNumber = SystemSettings.GetValue(userConnection, "UsrPeriodicalPublicationLastNumber").ToString(); SystemSettings.SetValue(userConnection, "UsrPeriodicalPublicationLastNumber", int.Parse(lastNumber) + 1); return(string.Format(codeMask, int.Parse(lastNumber))); }