XML : C# XML deserialization with namespace

I have XML:

  <?xml version="1.0" encoding="UTF-8"?>  <gesmes:Envelope xmlns:gesmes="http://www.gesmes.org/xml/2002-08-01" xmlns="http://www.ecb.int/vocabulary/2002-08-01/eurofxref">      <gesmes:subject>Reference rates</gesmes:subject>      <gesmes:Sender>          <gesmes:name>European Central Bank</gesmes:name>      </gesmes:Sender>      <Cube>          <Cube time='2015-12-16'>              <Cube currency='USD' rate='1.0933'/>              <Cube currency='JPY' rate='133.18'/>          </Cube>      </Cube>  </gesmes:Envelope>    

which I'm trying to deserialize with:

  [XmlRoot("Envelope", Namespace = EcbNameSpace)]  public class EcbEnvelope  {      const string EcbNameSpace = "http://www.gesmes.org/xml/2002-08-01";        [XmlElement("Sender", Namespace = EcbNameSpace)]      public string EcbSender { get; set; }        [XmlElement("subject", Namespace = EcbNameSpace)]      public string EcbSubject { get; set; }        [XmlArray("Cube")]      [XmlArrayItem("Cube")]      public List<CubeRoot> CubeRootEl { get; set; }        public class CubeRoot      {          [XmlAttribute("time")]          public string Time { get; set; }            [XmlElement("Cube")]          public List<CubeItem> CubeItems { get; set; }            public class CubeItem          {              [XmlAttribute("rate")]              public string RateStr { get; set; }                [XmlIgnore]              public decimal Rate              {                  get { return decimal.Parse(RateStr); }              }                [XmlAttribute("currency")]              public string Currency { get; set; }          }      }     }    

However, it deserializes CubeRootEl as empty list. If I remove namspaces from XML, then it deserializes successfully. What am I doing wrong? I tried adding empty namespaces to CubeRootEl in code, but also unsuccessfully.