What binding version are you using? If you are not using the test binding, then security is not included so you won’t be able to use a lock. I suspect this is the case as I don’t see any security attributes displayed in your image.
What binding version are you using? If you are not using the test binding, then security is not included so you won’t be able to use a lock. I suspect this is the case as I don’t see any security attributes displayed in your image.