CSOM - get resource login name

can someone provide an example of how to get resource login name by using SCOM? 

here is what i have so far and the error i am getting.

projContext = new ProjectContext(pwaPath);

            CustomFieldCollection customFields = projContext.CustomFields;
            EnterpriseResourceCollection resources = projContext.EnterpriseResources;


            projContext.Load(projContext.EnterpriseResources);
            projContext.ExecuteQuery();


            projContext.Load(projContext.CustomFields);
            projContext.ExecuteQuery();

 foreach (EnterpriseResource rs in projContext.EnterpriseResources)
            {
                foreach (DataRow row in OracleTable.Rows)
                {
                    if (rs.User.LoginName == row["user_nm"].ToString())      //BREAKING HERE
                    { 

                        if (rs.ResourceType.ToString() == "Work")
                        {
                           }

                      }

                }

tatiana