Set Json Attribute on existing class

Question

I have an existing class in an external assembly which I can't change. I would like to serialize an object from this class with Newtonsoft JSON.Net, but not all the properties.

Normally I can do this with the JsonIgnoreAttribute attribute like this:

public class TestJsonClass
{
    public string PropA { get; set; }

    [JsonIgnoreAttribute]
    public string PropB { get; set; }
}

But since I can't change the class, is there a way to ignore a property without attributes?

You might want to do it at runtime, but it a bit expensive as you'll have to use reflection. Take a look at this thread: social.msdn.microsoft.com/Forums/en-US/winformsdesigner/thread/… — MilkyWayJoe
– MilkyWayJoe, Commented Apr 16, 2012 at 19:06
Why don't you deserialize to TestJsonClass and then copy the values to original object. — L.B
– L.B, Commented Apr 16, 2012 at 19:29

Equalizer · Accepted Answer · 2012-04-16 19:18:49Z

1

Try inherit class and override property with appropriate annotations or copy property values in a completely new class.

answered Apr 16, 2012 at 19:18

Equalizer

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