Question

I’ve got some XML I’m trying to import with c#, which looks something like this:

<root>
<run>
    <name = "bob"/>
    <date = "1958"/>
</run>
<run> 
    <name = "alice"/>
    <date = "1969"/>
</run>
</root>

I load my xml using

XElement xDoc=XElement.Load(filename);

What I want to do is have a class for “run”, under which I can store names and dates:

 public class RunDetails
{
    public RunDetails(XElement xDoc, XNamespace xmlns)
    {
        var query = from c in xDoc.Descendants(xmlns + "run").Descendants(xmlns + "name") select c;
        int i=0;
        foreach (XElement a in query)
        {
            this.name= new NameStr(a, xmlns); // a class for names
            Name.Add(this.name); //Name is a List<NameStr>
            i++;
        }
        // Here, i=2, but what I want is a new instance of the RunDetails class for each <run>
     }
  }

How can I set up my code to create a new instance of the RunDetails class for every < run>, and to only select the < name> and < date> inside a given < run>?

Answer 1

You can just LINQ to XML to create an IEnumerable from your XML.

IEnumerable<RunDetail> runDetails = from run in xdocument.Descendants("run")
                                select new RunDetail
                                {
                                    Name = run.Element("name").Value,
                                    Date = int.Parse(run.Element("date").Value)
                                };

This, of course, suggests there’s a class named RunDetail with public Name and Date (int for the year) properties. You can iterate over the enumerable as it is, or if you need more explicit access to the individual members, you can use .ToList() or .ToArray() to convert the query.