c# - Using ServiceStack's JsonSerializer to serialize arrays containing some null items -

in servicestack 3.9, when deserializing json array contains nulls, null values deserialized nulls, expected. however, when serialize same array json again, nulls turn empty objects.

public class myclass {     public string foo { get; set; } }       [fact]     public void test()     {         var originaljson = "[{\"foo\":\"bar\"},null]";          var arr = servicestack.text.jsonserializer.deserializefromstring<myclass[]>(originaljson);          var result = servicestack.text.jsonserializer.serializetostring(arr);         // output actually: [{"foo":"bar"},{}]          assert.equal(originaljson, result); // fails     } 

is expected behavior? or there way serialize array containing nulls, , have null items appear in json nulls rather empty objects?

note when serializing array of literals, strings, null values returned null values, , not objects.

i had problem too. found if array cast object[] before calling serializetostring() null values output expected.

var result = servicestack.text.jsonserializer.serializetostring((object[])arr); // result correct [{"foo":"bar"}, null] 

you can globally set serialization of myclass using jsconfig:

jsconfig<myclass[]>.rawserializefn = (obj) => ((object[])obj).tojson();