Having worked with Xamarin Studio, I have come to love the String.Format hinting and highlighting features:
In Visual Studio, by default, there is no such a feature:
I have given a shot at some queries over the Visual Studio Gallery and Google, but haven't come up with anything. Maybe anyone here has a clue whether such extension exists and where could I find it?
Am not sure whether this question obliges by the rule:
Questions asking us to recommend or find a book, tool, software library, tutorial or other off-site resource are off-topic for Stack Overflow as they tend to attract opinionated answers and spam. Instead, describe the problem and what has been done so far to solve it.
I hope it does, if not, well, I'll delete it and look elsewhere.
JetBrains' ReSharper offers exactly this functionality:
Sometimes I wonder what ReSharper can NOT do... :-)