Deleting items from datagrid (xml)

Question

I have a datagrid buttoncolumn which acts as delete buttons for my xml nodes. The elements are simply displayed in a boundcolumn, so there names get displayed.

Each item generated gets a unique id (each time one is made id+++). My question his how can i remove a item (the entire element node with that certain id) when i click on one of the buttons in the bound column?

<root>
   <element id="0">
      <name>One</name>
   </element>
   <element id="1">
       <name>Two</name>
   </element>
</root>

 protected void dg_DeleteCommand(object sender, DataGridCommandEventArgs e)
    {
        XmlFunctions.Remove(index);
    }/*dg_DeleteCommand*/

(function on other class, where all my xml methods are written)

public static void Remove(string index)
{
XmlDocument XMLDoc = new XmlDocument();
XMLDoc.Load(XMLFile);
XPathNavigator nav = XMLDoc.CreateNavigator();

var node = nav.SelectSingleNode("/test/one[@id='" +???+ "']");
node.DeleteSelf();
XMLDoc.Save(XMLFile);
}

Edit: added datagrid

    <asp:View ID="viewDelete" runat="server">
        <asp:DataGrid ID="dgDelete runat="server" AutoGenerateColumns="False" OnDeleteCommand="dg_DeleteCommand">
            <Columns>
                <asp:BoundColumn DataField="name" HeaderText="names" />
                <asp:ButtonColumn ButtonType="PushButton" Text="Delete" CommandName="Delete" ></asp:ButtonColumn>
            </Columns>
        </asp:DataGrid>  
    </asp:View>

Answer 1

protected void dg_DeleteCommand(object sender, DataGridCommandEventArgs e)     
{
         XmlFunctions.Remove(grid selected value);     
}

public static void Remove(string itemValue) 
{
   XDocument doc = XDocument.Load("xmlfile.xml");
   doc.Descendants("test")
         .Where(p=>p.Attribute("id") != null 
                   && p.Attribute("id").Value == itemValue)
         .SingleOrDefault().Remove();
}