c# xml操作

 1 XmlDocument result = new XmlDocument();
 2 
 3             //root
 4             XmlElement root = result.CreateElement("root");
 5             result.AppendChild(root);
 6 
 7 
 8             StampService mrs = new StampService();
 9             IQueryable<BI_StampInfo> carres = mrs.GetAllBases();
10             if (carres != null)
11             {
12                 List<BI_StampInfo> carlist = carres.ToList();
13                 foreach (BI_StampInfo item in carlist)
14                 {
15                     //info
16                     XmlElement info = result.CreateElement("info");
17                     root.AppendChild(info);
18 
19                     //elements
20                     XmlElement Type1 = result.CreateElement("类别");
21                     Type1.InnerText = item.Type;
22                     Type1.SetAttribute("newAttribute", "test");
23                     info.AppendChild(Type1);
24 
25                     
26                 }
27             }
28 
29             return result;