Skip to content

Searcharticlesvideosblogsforumsinterview questionsarticles

Tech
Articles
Blogs
News
Videos
Interviews
Forums
Books
Events
- Jobs
- Stories

Article
Blog
Video
Ebook
Interview Question

Loading

Upcoming Events

23 NOV
AI Agents Conference 2026 - 3rd Edition

Our Training Programs

AI & Machine Learning
Mastering Large Language Models
Mastering Prompt Engineering
Certified Vibe Coder
Github Copilot Training
Generative AI for Beginners
n8n Automation & AI Agents Training

About Us Contact Us Privacy Policy Terms Brand Guidelines Partners C# Tutorials Consultants Ideas Report A Bug FAQs Sitemap Stories CSharp TV DB Talks Web3 Universe Jumpstart Blockchain

©2026 C# Corner.

All contents are copyright of their authors.

Questions to develop an app to compare and merge XML files

Home
Forums
C# Corner

Questions to develop an app to compare and merge XML files

Edouard Durand

4yAsked May 23, 2022, 10:32 PM845C# Corner

Hello,

If I am developing a C# application that allows to compare two XML files and also to merge two XML files, how should I make it?

Which libraries to use?

Do you have examples on comparing 2 XML files and merging 2 XML files?

I would also like to output a report that lists the differences between the 2 XML files.

Thank you for your help.

1 Reply

Know the answer? Post it — somebody with the same question will find it here.

Sign in to answer this question

It is the same account you read, post and publish with — and you will come straight back to this page.

Sign in Create an account

Sachin Singh4y ago
If you want GIT/ TFS like comparing feature with highlight the changes then you will have to use some graphics,
otherwise comparing and merging is simple.
var xml1 = XDocument.Load("file1.xml");
var xml2 = XDocument.Load("file2.xml");

//Combine and remove duplicates
var combinedUnique = xml1.Descendants("AllNodes")
                          .Union(xml2.Descendants("AllNodes"));

//Combine and keep duplicates
var combinedWithDups = xml1.Descendants("AllNodes")
                           .Concat(xml2.Descendants("AllNodes"));
for GIT like feature use XMLDiff API from microsoft. and follow below code.
var node1 = XElement.Parse(xml1).CreateReader();
var node2 = XElement.Parse(xml2).CreateReader();

var result = new XDocument();
var writer = result.CreateWriter();

var diff = new Microsoft.XmlDiffPatch.XmlDiff(); // diff will contain summary of difference
diff.Compare(node1, node2, writer);
writer.Flush();
writer.Close();