.Net中的System.Xml.Linq命名空间提供了linq to xml的支持

例子xml file

          
      
       Tove
           
      
       Jani
           
      
       Reminder
           Don't forget me this weekend!    
                  
       
        aking
               
       
        man
               
       
        27
           
          
              
       
        jambor
               
       
        man
               
       
        27
           
      
     

how to operate

var query = from c in xml.Descendants("user")                        let a = c.Element("name").Value                        where a == "aking"                         select new { c, a };