using System;

using System.Linq;

using System.Xml.Linq;

​

public class Program

{

    public static void Main()

    {

        string xml = "<Tests>" + 

                     "<Test><hostSW>startsWith1</hostSW></Test>" +

                     "<Test><hostSW>startsWith2</hostSW></Test>" +

                     "<Test><hostCN>contains1</hostCN></Test>" +

                     "<Test><hostEW>endsWith1</hostEW></Test>" +

                     "</Tests>";

        XDocument xdoc = XDocument.Parse(xml); 

​

        var t = xdoc.Root.Descendants("Test")

             .Elements()

             .Where(x => x.Name == "hostSW" || x.Name == "hostCN" || x.Name == "hostEW")

             .Select(x => (x.Name == "hostSW") ? x.Value.ToString() + "*" : (x.Name == "hostCN" ? "*" + x.Value.ToString() + "*" : "*" + x.Value.ToString()))

             .ToList();

        t.ForEach(i => Console.Write("{0}\t", i));

    }

}