How Can I Get Column Value In properties

 List<eimpactadmin.entities.eimpactappentitymodel.getloginhistory_result> source = _eImpactApp.GetLoginHistory(periodType, Datetime, Datetime).ToList();
 if (source.Count > 0)
                    {
                      LoginUser luser= new LoginUser();                    


                    }

i want to get value in properties like

LoginUser luser= new LoginUser();
luser.userid="value";