Linking one App.config in multiple projects

I recently had a .NET solution where I wanted to use the same App.config in 2 different projects.  I wanted to always ensure that changes made in the App.config of the original project would be reflected in other project(s) automatically.  Listed below are the steps I used to facilitate that process.

1.     Right-click your project in Solution Explorer

2.     Select "Add" -> "Existing Item..."

3.     Navigate to the file that you want to add to the solution

4.     [Important] Instead of hitting Enter or clicking the Add button, you want to click the down-arrow icon at the right edge of the Add button, and select "Add As Link".