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Element-centric XML diff with Linq to Xml
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| void Main() | |
| { | |
| var contact = new Contact{ | |
| FirstName = "John", | |
| LastName = "Smith", | |
| HomePhone = new Phone{ | |
| Number = "303-123-1234" | |
| } | |
| }; | |
| var doc1 = ToXDocument(contact); | |
| contact.LastName = "Changed"; | |
| var doc2 = ToXDocument(contact); | |
| var differences = doc2.Descendants("Contact").Except(doc1.Descendants("Contact"), new Comparer()); | |
| differences.Dump(); | |
| foreach (XNode d in differences) | |
| { | |
| var el = d as XElement; | |
| el.Name.Dump("Name"); | |
| el.Value.Dump("Value"); | |
| } | |
| } | |
| class Comparer : IEqualityComparer<XNode> | |
| { | |
| public bool Equals(XNode e1, XNode e2){ | |
| if( !(e1 is XElement)) return true; | |
| if( !(e2 is XElement)) return false; | |
| var el1 = e1 as XElement; | |
| var el2 = e2 as XElement; | |
| return Tuple.Create(el1.Name,el1.Value).Equals(Tuple.Create(el2.Name,el2.Value)); | |
| } | |
| public int GetHashCode(XNode n){ | |
| if( !(n is XElement)) return 0; | |
| var el = n as XElement; | |
| return Tuple.Create(el.Name,el.Value).GetHashCode(); | |
| } | |
| } | |
| XDocument ToXDocument<T>(T o){ | |
| return XDocument.Parse(ToXml(o)); | |
| } | |
| string ToXml<T>(T o){ | |
| var serializer = new XmlSerializer(typeof(T)); | |
| var writer = new StringWriter(); | |
| serializer.Serialize(writer,o); | |
| return writer.ToString(); | |
| } | |
| public class Contact | |
| { | |
| public string FirstName { get; set; } | |
| public string LastName { get; set; } | |
| public Phone HomePhone { get; set; } | |
| } | |
| public class Phone { | |
| public string Number { get; set; } | |
| } |
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