Suppress properties with null value on ASP.NET Web API

Question

I've created an ASP.Net WEB API Project that will be used by a mobile application. I need the response json to omit null properties instead of return them as property: null.

How can I do this?

Answer 1

In the WebApiConfig:

config.Formatters.JsonFormatter.SerializerSettings =                   new JsonSerializerSettings {NullValueHandling = NullValueHandling.Ignore}; 

Or, if you want more control, you can replace entire formatter:

var jsonformatter = new JsonMediaTypeFormatter {     SerializerSettings =     {         NullValueHandling = NullValueHandling.Ignore     } };  config.Formatters.RemoveAt(0); config.Formatters.Insert(0, jsonformatter); 

Answer 2

I ended up with this piece of code in the startup.cs file using ASP.NET5 1.0.0-beta7

services.AddMvc().AddJsonOptions(options => {     options.SerializerSettings.NullValueHandling = NullValueHandling.Ignore; });