private int Get_User_Only_Car(DBCRMTree db, long au_code)
{
string sql = "select top 1 CI_Code from CT_Car_Inventory where CI_AU_Code=@0;";
dynamic car = db.Query <dynamic>(sql, au_code);
dynamic _car = JsonConvert.DeserializeObject <dynamic>(JsonConvert.SerializeObject(car));
string _CI = JsonConvert.SerializeObject(_car[0].CI_Code);
return(Convert.ToInt32(_CI));
}