C# Get the difference between two files and use it for incremental backup

Question

I want to create my own incremental backup solution using C#. How can I obtain the difference between two files (version 1 and version 2 of ABC.TXT) and then update ABC.TXT version 1 with the difference? Would appreciate some hints! Thank you!

Answer 1

here are some articles to some diff algorithms explained in C#

Codeproject 1

Codeproject 2

Its not easy to get this algorithm right. I would suggest executing kdiff3 or some other good diffing tool in a background process rather than writing it yourself.