Sorting XML using Linq on Attribute

//Lets say you want sort an XML on some intiger value something as below.
string mySchedules = "<showschedule>" +
"<fall name=\"FAL\" text=\"Y\" index=\"3\"/>" +
"<spring name=\"SPR\" text=\"Y\" index=\"2\"/>" +
"<winter name=\"WIN\" text=\"Y\" index=\"1\"/>" +
"<summer name=\"SUM\" text=\"Y\" index=\"4\"/>" +
"</showschedule>";

XElement xShows = XElement.Parse(mySchedules);

//This is how you sort
IEnumerable<XElement> sortShows = from s in xShows.Descendants()
orderby (int)s.Attribute("index")
select s;

//This will give you output in the object sortShows as below.

/*
"<showschedule>" +
"<winter name=\"WIN\" text=\"Y\" index=\"1\"/>" +
"<spring name=\"SPR\" text=\"Y\" index=\"2\"/>" +
"<fall name=\"FAL\" text=\"Y\" index=\"3\"/>" +
"<summer name=\"SUM\" text=\"Y\" index=\"4\"/>" +
"</showschedule>";

*/

//You can see the output in the below String
string commaSeperatedSortedMsg = "";
foreach (XElement xE in sortShows)
{
commaSeperatedSortedMsg += " , " + xE.Attribute("index").Value + xE.Attribute("name").Value;

}