private void Form1_Load(object sender, EventArgs e)
        {
            NewDataSet.ReadXml("SalesData.xml");
            this.reportViewer1.RefreshReport();
        }

<?xml version="1.0" standalone="yes"?>
<DocumentElement>
  <table>
    <Sales>15981.0252</Sales>
    <OrderYear>2003</OrderYear>
    <ProdCat>Component</ProdCat>
    <SubCat>Saddle</SubCat>
    <OrderQtr>Q4</OrderQtr>
  </table>
  <table>
    <Sales>151097.1650</Sales>
    <OrderYear>2003</OrderYear>
    <ProdCat>Clothing</ProdCat>
    <SubCat>Jersey</SubCat>
    <OrderQtr>Q4</OrderQtr>
  </table>
  <table>
    <Sales>56298.7425</Sales>
    <OrderYear>2003</OrderYear>
    <ProdCat>Clothing</ProdCat>
    <SubCat>Tights</SubCat>
    <OrderQtr>Q2</OrderQtr>
  </table>
</DocumentElement>