private static void Main(string[] args) { SqlCeConnection sqlCeCon = new SqlCeConnection("Data Source=\\endo.sdf"); try { sqlCeCon.Open(); Console.WriteLine("Connection is open"); SqlCeCommand cmd = new SqlCeCommand(); cmd.Connection = sqlCeCon; cmd.CommandType = System.Data.CommandType.Text; cmd.CommandText = "SELECT * FROM Workout;"; SqlCeResultSet rs = cmd.ExecuteResultSet(ResultSetOptions.Scrollable); List <Workout> workoutList = new List <Workout>(); if (rs.HasRows) { int ordId = rs.GetOrdinal("Id"); int ordWorkoutId = rs.GetOrdinal("WorkoutId"); int ordSport = rs.GetOrdinal("Sport"); int ordDuration = rs.GetOrdinal("Duration"); while (rs.Read()) { Guid id = rs.GetGuid(ordId); string workoutId = rs.GetString(ordWorkoutId); int sport = rs.GetInt32(ordSport); double duration = rs.GetDouble(ordDuration); workoutList.Add(new Workout(id, workoutId, sport, duration)); } } int counter = 1; foreach (Workout workout in workoutList) { cmd.CommandText = $"SELECT * FROM Track WHERE Track.WorkoutId='{workout.Id}';"; //Console.WriteLine(cmd.CommandText); rs = cmd.ExecuteResultSet(ResultSetOptions.Scrollable); List <Track> trackList = new List <Track>(); if (rs.HasRows) { int ordId = rs.GetOrdinal("Id"); int ordWorkoutId = rs.GetOrdinal("WorkoutId"); int ordTimestamp = rs.GetOrdinal("Timestamp"); int ordInstruction = rs.GetOrdinal("Instruction"); int ordLatitude = rs.GetOrdinal("Latitude"); int ordLongitude = rs.GetOrdinal("Longitude"); int ordDistance = rs.GetOrdinal("Distance"); int ordSpeed = rs.GetOrdinal("Speed"); int ordAltitude = rs.GetOrdinal("Altitude"); int ordSentToServer = rs.GetOrdinal("SentToServer"); while (rs.Read()) { int id = rs.GetInt32(ordId); Guid workoutId = rs.GetGuid(ordWorkoutId); DateTime timestamp = rs.GetDateTime(ordTimestamp); timestamp = timestamp.Subtract(new TimeSpan(2, 0, 0)); int instruction = rs.IsDBNull(ordInstruction) ? -1 : rs.GetInt32(ordInstruction); double latitude = rs.GetDouble(ordLatitude); double longitude = rs.GetDouble(ordLongitude); double distance = rs.GetDouble(ordDistance); double speed = rs.GetDouble(ordSpeed); double altitude = rs.GetDouble(ordAltitude); bool sentToServer = rs.GetBoolean(ordSentToServer); trackList.Add(new Track(id, workoutId, timestamp, instruction, latitude, longitude, distance, speed, altitude, sentToServer)); } string fileName; fileName = String.Format("Endo_{0}_tcx.tcx", counter); CreateXmlTcx(fileName, workout, trackList); fileName = String.Format("Endo_{0}_gpx.gpx", counter); CreateXmlGpx(fileName, workout, trackList); } counter++; } sqlCeCon.Close(); Console.WriteLine("Connection is closed"); } catch (Exception ex) { Console.WriteLine(ex.Source + " - " + ex.Message); } //Console.ReadKey(); }