XML问题！

Question

  <LocalFileList>
    <UpdateFile1.0.1 import="0">
      <FileName>aa.txt</FileName>
      <FileName>bb.txt</FileName>
    </UpdateFile1.0.1>
    <UpdateFile1.0.2 import="1">
      <FileName>aa.txt</FileName>
      <FileName>cc.txt</FileName>
    </UpdateFile1.0.2>
    <UpdateFile1.1.3 import="0">
      <FileName>aa.txt</FileName>
      <FileName>bb.txt</FileName>
    </UpdateFile1.1.3>
  </LocalFileList>
我想遍历 <LocalFileList>，不“重复”显示FILENAME的内容，只显示aa.txt  bb.txt  cc.txt

Answer 1

无重复遍历子节点   <LocalFileList>
     <UpdateFile1.0.1 import="0">
       <FileName>aa.txt </FileName>
       <FileName>bb.txt </FileName>
     </UpdateFile1.0.1>
     <UpdateFile1.0.2 import="1">
       <FileName>aa.txt </FileName>
       <FileName>cc.txt </FileName>
     </UpdateFile1.0.2>
     <UpdateFile1.1.3 import="0">
       <FileName>aa.txt </FileName>
       <FileName>bb.txt </FileName>
     </UpdateFile1.1.3>
   </LocalFileList> 

Answer 2

            XmlDocument doc = new XmlDocument();
            doc.Load(@"D:\Project\C#Test\WindowsApplication1\WindowsApplication1\XMLFile1.xml");            XmlNodeList nodeList = doc.SelectNodes("//LocalFileList//FileName");
            List<string> values = new List<string>();
            foreach (XmlElement element in nodeList)
            {                if (!values.Contains(element.InnerText))
                {
                    Debug.WriteLine(string.Format("FileName:{0}", element.InnerText));
                    values.Add(element.InnerText);
                }
            }

Answer 3

hoho 就是遍历的时候 判断当前节点是否已经存在 已遍历的节点集合中了