问在升级过程中迁移到Json.NET类型的版本2的最佳实践

EN

class MyObject_V1
{
    [Confidential]
    public string StringData
    {
        get;
        set;
    }
}

class MyObject_V2
{
    public ConfidentialString StringData
    {
        get;
        set;
    }
}

class ConfidentialString
{
    [OnSerializing]
    public void Serialize(StreamingContext context)
    {
        //Encrypt value...
    }

    [OnDeserialized]
    public void Deserialized(StreamingContext context)
    {
        //Decrypt value...
    }

    public string Value
    {
        get;
        set;
    }
}