[Freeswitch-users] How to stop a Recording when the user presses "#" on C# project?

Hi there, I am working on a C# project and would like to record a message when the user is ready to record. Here is the API for C#: * public int RecordFile(string file_name, int time_limit, int silence_threshold, int silence_hits); *This API will stop the call only on timeout or when there is seconds of silence. What I want to do is to let the user decide when to end the recording by pressing a "#" key. So how can I do that? Do I have to use C code to do that? (by sending event to C code side?) Thanks, Frankie * *