XDocument attribute value

<?xml version="1.0" encoding="ISO-8859-1"?> <kdd>
<Table>
    <robel ID="1">
        <groof NAME="GOBS-1">
            <sintal ID="A">Sylvia</sintal>
        </groof>
    </robel>
</Table> </kdd>

如何得到Sylvia？

XDocument doc = XDocument.Load("x.xml");
foreach (XElement element1 in doc.Descendants("sintal"))
{ 
    if (element1.Attribute("ID=""A""").Value == c.name)
     { 
         //do I get Syliva here?
      }
}

foreach (XElement element1 in doc.Descendants("sintal"))
{ 
    string currentValue = (string)element1;
}