Comparing XmlDocument for equality (content wise)

Question

If I want to compare the contents of a XMlDocument, is it just like this?

XmlDocument doc1 = GetDoc1();
XmlDocument doc2 = GetDoc2();

if(doc1 == doc2)
{

}
         


        

Answer 1

Often You want to compare XML strings ordered differently. This can be done easy with this code

class Testing
{
    [Test]
    public void Test()
    {
        Assert.AreEqual(
            "".SortXml()
            , "".SortXml());
    }
}

public static class XmlCompareExtension
{
    public static string SortXml(this string @this)
    {
        var xdoc = XDocument.Parse(@this);

        SortXml(xdoc);

        return xdoc.ToString();
    }

    private static void SortXml(XContainer parent)
    {
        var elements = parent.Elements()
            .OrderBy(e => e.Name.LocalName)
            .ToArray();

        Array.ForEach(elements, e => e.Remove());

        foreach (var element in elements)
        {
            parent.Add(element);
            SortXml(element);
        }
    }
}