private void buttonSetPosition_Click(object sender, EventArgs e) { SIMCONNECT_DATA_LATLONALT observerLLA = new SIMCONNECT_DATA_LATLONALT(); observerLLA.Latitude = TryParseDouble(textBoxMPosLat.Text); observerLLA.Longitude = TryParseDouble(textBoxMPosLong.Text); observerLLA.Altitude = TryParseDouble(textBoxMPosAlt.Text); simconnect.SetObserverPosition(textBoxMObserverName.Text, observerLLA); }