Hi all

I have the following xml file :

<?xml version="1.0" encoding="utf-8" ?>
<root>
    <persons>
        <person>
            <firstname>Mark</firstname>
            <surname>Jones</surname>
            <age>33</age>
        </person>
        <person>
            <firstname>Adbul</firstname>
            <surname>Khan</surname>
            <age>30</age>
        </person>
        <person>
            <firstname>Bob</firstname>
            <surname>Smith</surname>
            <age>31</age>
        </person>
    </persons>
</root>

I have the following expression

XElement myXml = XElement.Load("Sample.xml");

var allPersonsInOrderOfAge = from person in
myXml.Descendants("person") orderby person.Element("age") select
person;

However when I run this - I get an error saying "At least one object
must implement IComparable"

Can anyone shed any light on this? Is my expression wrong... How can I
correct this problem?

Many thanks