Hi Adriana,
there is something wrong with the involved terminology here, so
hopefully I understand your question correctly:
You use an USRP E110, on which you run an GNU Radio flowgraph that
you created in python.
You have another computer somewhere else, that has a C# runtime on it.
You want to
Adriana -
The GNURadio UDB source / sink blocks are just receiving / sending samples
via a UDP port.
You can use a block, or a C# application that just listens to the socket.
Look at the implementation of the UDP source if you are confused. It is
just using 'basic UDP sockets'.
http://gnuradio.