Serialization and Deserialization

public static string SerializeObject(object o)
    {
        if (!o.GetType().IsSerializable)
        {
            return null;
        }
        using (MemoryStream stream = new MemoryStream())
        {
            new BinaryFormatter().Serialize(stream, o);
            return Convert.ToBase64String(stream.ToArray());
        }
    }

public static object DeserializeObject(string str)
{
        byte[] bytes = Convert.FromBase64String(str);
        using (MemoryStream stream = new MemoryStream(bytes))
        {
            return new BinaryFormatter().Deserialize(stream);
        }
}