I was involved in a rewrite of a ~10 year old vb app to C#. A lot of it involved rewriting the code almost line for line in C# then adding unit tests and refact

I was involved in a rewrite of a ~10 year old vb app to C#. A lot of it involved rewriting the code almost line for line in C# then adding unit tests and refactoring. It took a team of 4 about 6 months for most of the work. At the end we had a solid and now much easier to maintain app that was consistent with the rest of our application suite. Highly successful project. Sometimes a rewrite is the right choice.