Question

Given the following

• A line number
• A column number
• An XML file

(Where the line and column number represent the ‘<‘ character of a node)

Using the XDocument API how do I find the XNode at that position.

Answer 1

You can do something like that:

XNode FindNode(string path, int line, int column)
{
    XDocument doc = XDocument.Load(path, LoadOptions.SetLineInfo);
    var query =
        from node in doc.DescendantNodes()
        let lineInfo = (IXmlLineInfo)node
        where lineInfo.LineNumber == line
        && lineInfo.LinePosition <= column
        select node;
    return query.LastOrDefault();
}