Question

I’m playing with an imported XML file and using XMLDocument I’m wondering if there is a better way to do the same thing.
Basically root contains MHZ nodes and each MHZ contains several devices and one name.
I want to count every MHZ nodes and display the number of devices in each MHZ :

        String xmlName = "tts.xml";
        XmlDocument readDoc = new XmlDocument();
        readDoc.Load(xmlName);
        int fileNb = readDoc.SelectNodes("//MHZ").Count;
        Console.WriteLine("MHZ number : "+fileNb);
        for (int i = 0; i < fileNb; i++)
        {   
            int deviceNb = readDoc.SelectNodes("//MHZ[" +(i+1)+ "]/device").Count;
            Console.WriteLine(deviceNb);
        }

Answer 1

If you’re using .NET 3.5 or later, I’d use LINQ to XML:

var doc = XDocument.Load(xmlName);
var mhzs = doc.Descendants("MHZ");
Console.WriteLine("Count of MHZ: {0}", mhz.Count());
foreach (var mhz in mhzs)
{
    Console.WriteLine(mhz.Elements("device").Count());
}