Demonstration of #XML #Canonicalisation in C# using #LinqPad

XmlCanonicalization.linq

<Query Kind="Statements">
  <Reference>&lt;RuntimeDirectory&gt;\System.Security.dll</Reference>
  <Namespace>System.Security.Cryptography.Xml</Namespace>
</Query>

// need to load System.Security via F4
XmlDocument myDoc = new XmlDocument();
myDoc.LoadXml("<root x='x' a='a'><trunk>etc</trunk></root>");
myDoc.OuterXml.Dump("Attributes in original document order");
XmlDsigC14NTransform t = new XmlDsigC14NTransform();
t.LoadInput (myDoc);
var ms = (MemoryStream)t.GetOutput();
var x = Encoding.ASCII.GetString(ms.ToArray());
x.Dump("Attributes should be in alphabetical order");