# Tuesday, November 01, 2011

Streaming XML using LINQ to XML (continued)

Richard Blewett reminded me that the XmlReader.ReadSubtree method makes it even easier to use LINQ to XML with a streaming approach. The code sample below will load nodes from an arbitrary XML files and yield them to the caller as they’re read from file:

static IEnumerable<XElement> Load(string filename, string elementName)
{
    XmlReaderSettings settings = new XmlReaderSettings();
    settings.IgnoreWhitespace = true;
    using (XmlReader reader = XmlReader.Create(filename, settings))
    {
        while (reader.ReadToFollowing(elementName))
        {
            // build element from subtree
            XElement element = XElement.Load(reader.ReadSubtree());
            yield return element;
        }
    }
}
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