Question What's the problem?

[Brockdish]

 

[JohnH]

What problem does VS say it is?

 

[jmcilhinney]

The problem is that you have made no effort to provide any reasonable level of information with which we might diagnose this issue. The title of your thread is basically meaningless and your post contains nothing but a screenshot. That's unacceptable. You should not be asking a question in your title. Start by writing a post that provides a FULL and CLEAR explanation of the problem, which includes what you're trying to achieve, how you're trying to achieve it and what happens when you try. You can then add screenshots or the like to make this clearer but they are not a substitute for words. The last thing you should do is write the title and that should be a summary of the problem. For one thing, if the IDE underlines some code that is in error then the IDE itself will tell you why it did so. The fact that you have not mentioned that error message suggests that you haven't even looked. Even if you don't understand what it tells you, you still need to provide us with that information if you expect us to diagnose the problem. You need to do all you can for yourself first, then you need to do all you can to help us help. If you do that, you'll find plenty of people eager to provide that help.