How to add this xml data to dataset?

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C#

.NET

ADO.NET

WPF

C#4.0

.NET4

previously my xml was like this

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <supplier>
    <s_code>1</s_code>
    <net_weight>100</net_weight>
    <rate>100.00</rate>
  </supplier>

  <supplier>
    <s_code>2</s_code>
    <net_weight>500</net_weight>
    <rate>150.00</rate>
  </supplier>
</root>

so i created a dataset and added columns similar to this and used this code to load data into dataset and use dataset to create crystal report.

DataSet reportData = new DataSet();
reportData.ReadXml("http://192.168.1.10/test/data.xml");

DataSet dset = new DataSet1();
dset.Tables[0].Merge(reportData.Tables[0]);

ReportDocument report = new CrystalReport1();
report.SetDataSource(dset.Tables[0]);
reportViewer.ViewerCore.ReportSource = report;

so now i need to add more information to report and xml looks like this

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <supplier>
    <s_code>1</s_code>
    <net_weight>100</net_weight>
    <rate>100.00</rate>

    <items>
      <item_code>SKU001</items_code>
      <price>100</price>
    </items>
    <items>
      <item_code>SKU002</items_code>
      <price>200</price>
    </items>

  </supplier>

  <supplier>
    <s_code>2</s_code>
    <net_weight>500</net_weight>
    <rate>150.00</rate>

    <items>
      <item_code>SKU001</items_code>
      <price>100</price>
    </items>

  </supplier>

</root>

so any idea how to insert items into a dataset and use it in report?

Regards