can someone explain to me how you use the command DigitalOutput?
Use a gadgeteer MOUNTANEER eth.
I tried to use the following code:

         GT.Interfaces.DigitalOutput out1;
         GT.Socket GT.Socket.GetSocket socket = (4, true, null, null);
         out1 = new GT.Interfaces.DigitalOutput (socket, GT.Socket.Pin.Three, true, null);
         out1.Write (true);

but it does not work, I get:

 Create TS.

    Loading start at 8054110, end 8066fcc

    Assembly: mscorlib ( Assembly: Microsoft.SPOT.Native ( Assembly:         Microsoft.SPOT.Hardware (
    Assembly: Microsoft.SPOT.Hardware.PWM ( Assembly:       Microsoft.SPOT.Hardware.SerialPort (
    Assembly: Microsoft.SPOT.Net ( Assembly: System ( Loading Deployment Assemblies.

     Attaching deployed file.

     Assembly: MFConsoleApplication1 ( Attaching files deployed.

     Assembly: Microsoft.SPOT.IO ( Attaching files deployed.

     Assembly: Microsoft.SPOT.TinyCore ( Attaching files deployed.

     Assembly: Microsoft.SPOT.Graphics ( Attaching files deployed.

     Assembly: Mountaineer.Netmf.Hardware ( Attaching files deployed.

     Assembly: System.IO ( Attaching files deployed.

     Assembly: Gadgeteer ( Resolving.

     Resolve: unknown type: Microsoft.SPOT.Touch.TouchGestureEventArgs

     Error: ff000000

     The program '[4] Micro Framework application: Managed' has exited with code 0 (0x0).
     Waiting for debug commands ...


The best way would be by looking at the extender or breakout modules drivers…or even using them as is.

what does you mean for “Extender or modules drivers”?

in the designer add an extender module. Then you will be able to control the pins high / low etc