in my asp.net website i want to get parent node name

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in my asp.net website i want to get parent node name .
my xml is

<?xml version="1.0" standalone="yes"?>
<gallery title="Tony's Photo Album" thumbDir="./images/thumbs/" imageDir="./images/" random="true">
  <category name="Building Inauguration">
    <image>
      <date>13/2/2012</date>
      <title>yjtjBuildingt</title>
      <desc>jytj</desc>
      <thumb>_MG_0523.JPG</thumb>
      <img>_MG_0523.JPG</img>
      <Cover>N</Cover>
    </image>
    <image>
      <date>30/1/2012</date>
      <title>titleBuilding</title>
      <desc>we</desc>
      <thumb>_MG_0513.JPG</thumb>
      <img>DSC_0295.JPG</img>
      <Cover>Y</Cover>
    </image>
  </category>
  <category name="Carnival-10">
    <image>
      <date>30/1/2012</date>
      <title>Carnival</title>
      <desc>we</desc>
      <thumb>_MG_0513.JPG</thumb>
      <img>DSC_0295.JPG</img>
      <Cover>Y</Cover>
    </image>

i want to retrieve category name dynamically hoe to do this.using dataset
pls help me