阅读和遍历C＃中的xml元素

Question

I am just started working with C# language and looking for a way to iterate though the elements and child elements from a xml file.

My xml Looks like this-

  <ServerList>
     <server name = "serverName1" username ="username" password ="password">
      <serviceName>serviceName</serviceName>
      <serviceName>serviceName</serviceName>
      <serviceName>serviceName</serviceName>
   </server>
<server name = "serverName2" username ="username" password = "password">
       <serviceName>serviceName</serviceName>
       <serviceName>serviceName</serviceName>
  </server>
<ServerList>

I am just looking for a approach where i can go through the first server elements and its child elements and than the next server elements and its child.

Answer 1

You could use LINQ to XML as a straightforward approach:

XDocument xdoc = XDocument.Load("myXmlFile.xml");

var servers = xdoc.Descendants("server"); 
for (var server in servers) 
{
    var children = server.Elements(); 
    for (var child in children)
    {
        // Do what you want with the server and child here
    }
}

If there's much more information you need, you might want to consider using XML deserialization. This will allow you to define classes that map to nodes in your XML schema, deserialize the XML into a graph of strongly typed objects that you can then iterate, filter, transform etc. If you do decide on this approach, I would suggest using YAXLib , because the BCL XML serializer kind of sucks.

Answer 2

Descendants is fine, here's a recursive approach anyway

class Program
{
    static void Main(string[] args)
    {
        XElement x = XElement.Load("XMLFile1.xml");
        recursive(x.Elements());
        Console.ReadKey();
    }

    private static void recursive(IEnumerable<XElement> elements)
    {
        foreach (XElement n in elements)
        {
            Console.WriteLine(n.Name);
            Console.WriteLine("--");
            if (n.Descendants().Any())
            {
                recursive(n.Elements());
            }
            else
            {
             Console.WriteLine(n.Value.ToString());// End of node (leaf)
            }
        }
    }

}