如何使用Linq到Xml获取单个XElement对象？

Question

I would like to use Linq to Xml to get a single XElement from a .xml file by attribute name, similar to how you retrieve single objects in Linq to Sql by Id below:

var singleDog = context.Dogs.Single(p => p.Id == int.Parse(Id));

Is this possible?

Answer 1

Absolutely. Just use something like:

xdoc.Descendants()
    .Where(x => x.HasAttribute("id") && x.Attribute("id")==id)
    .Single();

There may be a more efficient way of doing it, admittedly...