Example of Compare Documents in ASP.NET MVC Word (DocIO) Library
This sample demonstrates how to compare two Word documents using .NET Word (DocIO) library. With this, you can easily identify the changes between two versions of a document.
The .NET Word library (DocIO) allows you to compare two Word documents and highlight the changes, such as insertions, deletions, and formatting, as tracked changes.
More information about comparing Word document can be found in this