Convert XmlNodeList to XmlNode[]

Question

I have a external library that requires a "XmlNode[]" instead of XmlNodeList. Is there a direct way to do this without iterating over and transferring each node?

I dont want to do this:

XmlNode[] exportNodes = XmlNode[myNodeList.Count];
int i = 0;
foreach(XmlNode someNode in myNodeList) { exportNodes[i++] = someNode; }

I am doing this in .NET 2.0 so I need a solution without linq.

is there some reason not to iterate over the XmlNodeList and use it to load the XmlNode[]? Because if you'd done that, you'd be finished by now. — John Saunders
– John Saunders, Commented Dec 11, 2009 at 23:25
No reason, thats the current implementation. It just seems odd to my that it cant be done with more compiler semantics. — GrayWizardx
– GrayWizardx, Commented Dec 11, 2009 at 23:29
The compiler semantics for this are in the newer versions of C#/.NET :) If you're stuck with an older version, then you're stuck with what you've got. — Zooba
– Zooba, Commented Dec 11, 2009 at 23:48

tanascius · Accepted Answer · 2012-08-15 11:16:01Z

20

How about this straightfoward way...

var list = new List<XmlNode>(xml.DocumentElement.GetElementsByTagName("nodeName").OfType<XmlNode>());
var itemArray = list.ToArray();

No need for extension methods etc...

edited Aug 15, 2012 at 11:16

tanascius

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answered Sep 28, 2010 at 1:39

Rob

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1 Comment

vcsjones Over a year ago

OfType is a LINQ extension.

Daniel Manta · Accepted Answer · 2014-07-25 15:44:12Z

14

 XmlNode[] nodeArray = myXmlNodeList.Cast<XmlNode>().ToArray();

answered Jul 25, 2014 at 15:44

Daniel Manta

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Comments

Rubens Farias · Accepted Answer · 2009-12-12 00:12:41Z

8

Try this (VS2008 and target framework == 2.0):

static void Main(string[] args)
{
    XmlDocument xmldoc = new XmlDocument();
    xmldoc.LoadXml("<a><b /><b /><b /></a>");
    XmlNodeList xmlNodeList = xmldoc.SelectNodes("//b");
    XmlNode[] array = (
        new System.Collections.Generic.List<XmlNode>(
            Shim<XmlNode>(xmlNodeList))).ToArray();
}

public static IEnumerable<T> Shim<T>(System.Collections.IEnumerable enumerable)
{
    foreach (object current in enumerable)
    {
        yield return (T)current;
    }
}

Hints from here: IEnumerable and IEnumerable(Of T) 2

answered Dec 12, 2009 at 0:12

Rubens Farias

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1 Comment

Rubens Farias Over a year ago

@CaTx OP asked for a solution without Linq, and other answers use it. The Shim method is offered as an extension method, so it can be reused and placed in another class with other extensions methods. If you have different requirements, you should ask a new question.

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