使用GML/C#/LINQ将各种xml元素组合到一个集合中

using System.Xml.Linq;
using System.Linq;

List<XElement> combinedElements = new List<XElement>();

XDocument doc1 = XDocument.Load("file1.xml");
XDocument doc2 = XDocument.Load("file2.xml");
XDocument doc3 = XDocument.Parse("<element>...</element>");

var elements = from element in doc1.Descendants()
               select element;

combinedElements.AddRange(elements);

elements = from element in doc2.Descendants()
           select element;

combinedElements.AddRange(elements);

elements = from element in doc3.Descendants()
           select element;

combinedElements.AddRange(elements);