SQLConnection with SQLServer compact 3.5 (.sdf files)

using (SqlCeConnection con = new SqlCeConnection(@"Data Source=C:\Users\griff\Documents\AA Backed Up\My Databases\StandardReplies.sdf"))
    {
    using (SqlCeCommand cmd = new SqlCeCommand("SELECT * FROM Replies", con))
        {
        using (SqlCeDataReader reader = cmd.ExecuteReader())
            {
            while (reader.Read())
                {
                ...
                }
            }
        }
    }