How do I change the .Net Framework from version 3.5 to version 4.0

Question

I have created a class library in .NET Framework 3.5. Now I want to change the .NET Framework Version to 4.0.

How can I do this?

Answer 1

FYI - there's a "Target Framework Migrator" extension tool for Visual Studio (2013, 2015) that will do all projects in your solution in one go.

I'm working on a solution at the moment with a 100+ projects in it and it's not practicable to do each project one at a time IMO.