读取具有多个子节点的xml文件只会返回第一个节点

我有一个带有命名空间的xml文件，我可以正确读取它。它有一个名为'Items'的外部节点，其中有多个子节点，其中有50个子节点（因此50个子节点称为'ReceiverPoints'）。当我检查控制台，它的大小是正确的，即50，但是当我检查打印输出时，所有输出只是第一个ReceiverPoint节点的重复。

我想将每个接收器点保存到数据库中。根据我所看到的所有示例，我的实现看起来不错。但是它给了我错误的结果。有人可以帮我看看我所缺少的是什么吗？这是xml文件

public List<ReceiverPoint> ReadFile()
    {
        receiverList = new List<ReceiverPoint> ();

        Console.WriteLine ("Now in read file method :" + fileLocation);

            xmldoc = new XmlDocument ();
            xmldoc.Load (fileLocation);

        XmlNamespaceManager nameSpaceManager = new XmlNamespaceManager (xmldoc.NameTable);

        //nameSpaceManager.AddNamespace ("ns", "http://schemas.datacontract.org/2004/07/AristotleService.Models");
        nameSpaceManager.AddNamespace ("ns", "http://schemas.datacontract.org/2004/07/GTI.Aristotle.Web.Api.Models");



        XmlElement rootElement = xmldoc.DocumentElement;

        XmlNodeList nodeList = rootElement.SelectNodes("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint", nameSpaceManager);

        ReceiverPoint receiverPoint = new ReceiverPoint ();
foreach(XmlNode childNode in nodeList)
        {
            receiverPoint.CloseDate = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:CloseDate", nameSpaceManager).InnerText;
            receiverPoint.CreateDate = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:CreateDate", nameSpaceManager).InnerText;  
            receiverPoint.CreateWho = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:CreateWho", nameSpaceManager).InnerText;
            receiverPoint.Easting = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:Easting", nameSpaceManager).InnerText;
            receiverPoint.Elevation = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:Elevation", nameSpaceManager).InnerText;
            receiverPoint.IsDeployed = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:IsDeployed", nameSpaceManager).InnerText; 
            receiverPoint.IsManual = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:IsManual", nameSpaceManager).InnerText;
            receiverPoint.LastModifyDate = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:LastModifyDate", nameSpaceManager).InnerText;
            receiverPoint.Latitude = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:LatitudeWGS84", nameSpaceManager).InnerText;
            receiverPoint.Line = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:Line", nameSpaceManager).InnerText;
            receiverPoint.Longitude = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:LongitudeWGS84", nameSpaceManager).InnerText;
            receiverPoint.ReceiverType = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:ReceiverType", nameSpaceManager).InnerText;
            receiverPoint.Station = childNode.SelectSingleNode ("/ns:PagedDataInquiryResponseOfReceiverPointQ3ffICf5/ns:Items/ns:ReceiverPoint/ns:Station", nameSpaceManager).InnerText;




            //Get all the values stored in the receiver point object
            string station = receiverPoint.Station;
            string line = receiverPoint.Line;
            string elevation = receiverPoint.Elevation;
            string latitude = receiverPoint.Latitude;
            string longitude = receiverPoint.Longitude;
            string isDeployed = receiverPoint.IsDeployed;
            string easting = receiverPoint.Easting;
            string receiverType = receiverPoint.ReceiverType;
            string closeDate = receiverPoint.CloseDate;
            string createDate = receiverPoint.CreateDate;
            string createWho = receiverPoint.CreateWho;
            string lastModifyDate = receiverPoint.LastModifyDate;


            Console.WriteLine ("String lat : " + latitude);

            Console.WriteLine ("String lon : " + longitude);

            Console.WriteLine ("String create date : " + createDate);

            Console.WriteLine ("String create who : " + createWho);

            //Save the data to the db
            saveDataToDatabase (station,line,elevation,latitude,longitude,isDeployed,easting,receiverType,closeDate,createDate,createWho,lastModifyDate);


        }

        receiverList.Add (receiverPoint);
return receiverList;
    }