C#

sampleOne.xml:
<?xml version="1.0" standalone="yes"?>
  <user>
    <id>1</id>
    <name>Robin</name>
  </user>
  <user>
    <id>2</id>
    <name>Batman</name>
  </user>

sampleTwo.xml:
<?xml version="1.0" standalone="yes"?>
<NewDataSet>
  <user>
    <id>1</id>
    <name>Robin</name>
  </user>
  <user>
    <id>2</id>
    <name>Batman</name>
  </user>
</NewDataSet>

private string getXmlElementName(string path)
{
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load(path);
    XmlElement element = xmlDoc.DocumentElement;
    return element.Name;
}

private void openXmlFile(string path) //path ex: "c:\\sampleOne.xml"
{
    DataSet ds = new DataSet();
    ds.ReadXml(path,XmlReadMode.Auto);
    dgvBrowser.DataSource = ds;
    dgvBrowser.DataMember = getXmlElementName(path);
}