private void ConfigStream(object sender, EventArgs e) { if (connectingPin != null) { IAMStreamConfig isc = connectingPin.IPin as IAMStreamConfig; if (isc != null) { using (var f = new MediaTypeListForm(isc)) { if (f.ShowDialog() == DialogResult.OK) graph.PinSetFormat(connectingPin, f.selected_mt); } } } connectingPin = null; }