public void Disconnect() { service.Disconnect(); if (videoForm != null) { MediaDevice device = service.MediaDevice; //device.AVProcessor.ShowVideo -= videoForm.ShowVideo; //device.AVProcessor.PlayAudio -= videoForm.PlayAudio; //device.AVProcessor.ShowVideo -= videoForm.ShowVideo; //device.AVProcessor.PlayAudio -= videoForm.PlayAudio; videoForm.Close(); MediaFormManager.RemoveForm(videoForm); } ; MediaFormManager.UpdateControls(); }