reading xml file with xpath

[davikokar]

hallo I have an Xml file like this:

<?xml version="1.0"?>
<HomeFinanceXMLBase>
  <Content>
    <Configuration>
      <Data>
        <UserDefined>
          <CostTypeList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.CostType, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
          <CostCategoryList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.CostCategory, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
          <PaymentModeList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.PaymentMode, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
        </UserDefined>
        <Default>
          <CostTypeList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.CostType, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]">
            <CostType Type="ch.davico.HomeFinance.Model.CostType">
              <Identity Type="System.Guid">A9936A85-D892-4F28-B4C9-11512F9CACA0</Identity>
              <Name Type="System.String">Fix</Name>
            </CostType>
          </CostTypeList>
          <CostCategoryList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.CostCategory, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]">
            <CostCategory Type="ch.davico.HomeFinance.Model.CostCategory">
              <Identity Type="System.Guid"></Identity>
              <Name Type="System.String">Tax</Name>
            </CostCategory>
          </CostCategoryList>
          <PaymentModeList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.PaymentMode, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]">
            <PaymentMode Type="ch.davico.HomeFinance.Model.PaymentMode">
              <Identity Type="System.Guid">13EA6A12-C13F-41CB-924E-BDD64416D669</Identity>
              <Name Type="System.String">e-Banking</Name>        
            </PaymentMode>     
          </PaymentModeList>
        </Default>
      </Data>
    </Configuration>
    <Base>
      <ServiceList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.Service, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
      <InvoiceList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.Invoice, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
      <CostList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.Cost, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
      <PaymentList Type="System.Collections.Generic.List`1[[ch.davico.HomeFinance.Model.Payment, ch.davico.HomeFinance.Model, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]" />
    </Base>
  </Content>
</HomeFinanceXMLBase>

Under "configuration" and then "data" there are two children "UserDefined" and "Default". Within these two tags there are 3 lists "CostTypeLists", "CostCategoryList", "PaymentModeList".

By using xPath I can read the first set of lists (under "UserDefined": now are empty for clearness), but I wont be able to read the second set of lists under "Default".

I don't know why.

Here is the code I use for reading:

        public void ReadXml(XmlReader reader)
        {
            ReadConfigurationData(reader);
            ReadBaseData(reader);
        }

        private void ReadConfigurationData(XmlReader reader)
        {
            //read user defined data
            ReadList(reader, "//HomeFinanceXMLBase/Content/Configuration/Data/UserDefined/CostTypeList/CostType", typeof(CostType));
            ReadList(reader, "//HomeFinanceXMLBase/Content/Configuration/Data/UserDefined/CostCategoryList/CostCategory", typeof(CostCategory));
            ReadList(reader, "//HomeFinanceXMLBase/Content/Configuration/Data/UserDefined/PaymentModeList/PaymentMode", typeof(PaymentMode));
            //read default data
            ReadList(reader, "//HomeFinanceXMLBase/Content/Configuration/Data/Default/CostTypeList/CostType", typeof(CostType));
            ReadList(reader, "//HomeFinanceXMLBase/Content/Configuration/Data/Default/CostCategoryList/CostCategory", typeof(CostCategory));
            ReadList(reader, "//HomeFinanceXMLBase/Content/Configuration/Data/Default/PaymentModeList/PaymentMode", typeof(PaymentMode));
        }

        private void ReadList(XmlReader reader, string xpath, Type type)
        {
            XPathDocument xPath = new XPathDocument(reader);
            XPathNavigator navigator = xPath.CreateNavigator();
            XPathNodeIterator iterator = navigator.Select(xpath);

            while (iterator.MoveNext())
            {
                object o = Activator.CreateInstance(type);

                switch (type.Name)
                {
                    case "CostType":
                        o = ReadCostType(iterator.Current);
                        this.CostTypeList.Add((CostType)o);
                        break;
                    case "CostCategory":
                        o = ReadCostCategory(iterator.Current);
                        this.CostCategoryList.Add((CostCategory)o);
                        break;
                    case "PaymentMode":
                        o = ReadPaymentMode(iterator.Current);
                        this.PaymentModeList.Add((PaymentMode)o);
                        break;
                    case "Cost":
                        o = ReadCost(iterator.Current);
                        this.CostList.Add((Cost)o);
                        break;
                    case "Invoice":
                        o = ReadInvoice(iterator.Current);
                        this.InvoiceList.Add((Invoice)o);
                        break;
                    case "Payment":
                        o = ReadPayment(iterator.Current);
                        this.PaymentList.Add((Payment)o);
                        break;
                    case "Service":
                        o = ReadService(iterator.Current);
                        this.ServiceList.Add((Service)o);
                        break;
                }
            }
        }