public class Db
{

public static void WriteLocation(Gps gps)
{
string appPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase.ToString());
string dbcStr = @"Data Source =" + appPath.Replace(@"",@"") + @"Mc.sdf";
SqlCeConnection sqlCon = new SqlCeConnection(dbcStr);
SqlCeCommand sqlCmd = new SqlCeCommand(" ", sqlCon);
sqlCon.Open();
SqlCeTransaction sqltran = sqlCon.BeginTransaction();
sqlCmd.Transaction = sqltran;

try
{
sqlCmd.CommandText = "INSERT INTO Location_t (Lc_Dt, Lc_Longitude, Lc_Latitude, Lc_Speed, Lc_Direction) VALUES (@Lc_Dt,@Lc_Longitude,@Lc_Latitude,@Lc_Speed,@Lc_Direction)";
sqlCmd.Parameters.Add("Lc_Dt", SqlDbType.DateTime).Value = gps.Datetime;
sqlCmd.Parameters.Add("Lc_Longitude", SqlDbType.Decimal).Value = gps.DLong;
sqlCmd.Parameters.Add("Lc_Latitude", SqlDbType.Decimal).Value = gps.DLat;
sqlCmd.Parameters.Add("Lc_Speed", SqlDbType.Decimal).Value = gps.DSpeed;
sqlCmd.Parameters.Add("Lc_Direction", SqlDbType.Decimal).Value = gps.DDirection;
sqlCmd.ExecuteNonQuery();
sqltran.Commit();
}
catch (Exception ex)
{
sqltran.Rollback();
}
finally
{
sqlCon.Close();
}
}
}