Read xml fille using LINQ Query

Xml file: DomainList.xml

<?xml version="1.0" encoding="utf-8"?>
<DomainList>
  <DomainName name="https://google.com"/>
  <DomainName name="https://gmail.com"/>
  <DomainName name="fonts.googleapis.com"/>
  <DomainName name="fonts.gstatic.com"/>
</DomainList>

C# Code: below code check redirecting url contains in the xml file or Not

   Uri sReturnUrl = new Uri(ReturnUrl);
            XElement main = XElement.Load(HttpContext.Current.Server.MapPath("~/ExcelTemplates/DomainList.xml"));

            var query = (from param in main.Descendants("DomainName")
                         where ((string)param.Attribute("name")).Contains(sReturnUrl.Host)
                         select new
                         {
                             code = (string)param.Attribute("name")
                         }).FirstOrDefault();