"The type or namespace name "Brick" could not be found" Xamarin Studio with MonoBrick
You need to be using the standard MonoBrick Communication Library if you want to connect remotely to the EV3.

You would then need to have the following using statement at the top of your code:

using MonoBrick.Ev3


I believe you are referencing the MonoBrick EV3 Firmware which doesn't need to connect to the brick as it is the brick.