Hello, i have a problem with mono and json results and i don´t find any solution for it. I asked it at stack overflow and paste the text here. So, for a better formatted version of the question, see:
http://stackoverflow.com/questions/29017201/asp-net-mvc-web-api-with-mono-json-results-contain-no-null-for-nullable-types Hi, i have a problem that drives me crazy. I build a asp.net mvc web api project in visual studio 2013 on a windows 8.1 machine. It targets .net framework 4.0 (i choose this explicitly because it fits mono 3.2.8 perfect). I create the project with visual studio empty template, and VS installed the appropriate nuget packages for me. Then i installed mono 3.2.8 on ubuntu 14.04 LTS via apt-get install mono-complete. XSP is used as the web server. Nothing special done on both systems or the project. When code-changes are done, i deploy in VS the project to a folder and copy it to the ubuntu machine. Restart XSP and it runs. All works really fine since a long time (8 months and many code lines). But now i had to change my model, used as the JSON transport object, so that every bool or int is now nullable (bool? instead of bool). After i changed the properties of the model, and run the web api on the windows machine per F5, the JSON result in the browser (firefox or chrome, both show in every cases always the same results) contains "MyBoolValue: null" whenever the C# model property was null. Perfect. Thats what i expected and what i want. Now i copied the deploy to my ubuntu machine and let it run, as every time. But in the browser result there are no nulls ! Every "bool?" which where null in the model, not exists in the json result at all. Every "double?" is set to "0.0". I dont understand that ??? So i tried to set the JSON SerializeSettings (but i think "including nulls" is the default, so it is senseless): var f = new JsonMediaTypeFormatter(); f.SerializerSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Include; config.Formatters.Add(f); But that produced the following error on the asp.net engine: System.MissingMethodException Method not found: 'System.Net.Http.Formatting.JsonMediaTypeFormatter.get_SerializerSettings'. Description: HTTP 500.Error processing request. Details: Non-web exception. Exception origin (name of application or object): HHS.June.WebApi. Exception stack trace: at HHS.June.WebApi.MvcApplication.Application_Start () [0x00000] in :0 at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&) at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in :0 Version Information: 3.2.8 (Debian 3.2.8+dfsg-4ubuntu1); ASP.NET Version: 4.0.30319.17020 I tried it 6 ours, installing the Newtonsoft.JSON in the gac, changed versions, tried some web.config things, google google google, try to understand what and why the mono json serializer is doing what he is doing. It drives me crazy. Is anybody out there who know or understand or have at least an idea, how i can get a JSON response with "MyValue: null" when using nullable types in c# under mono ? Every tip is very very appreciated :) -- View this message in context: http://mono.1490590.n4.nabble.com/asp-net-mvc-web-api-with-mono-JSON-results-contain-no-null-for-nullable-types-tp4665627.html Sent from the Mono - ASP.NET mailing list archive at Nabble.com. _______________________________________________ Mono-aspnet-list mailing list [email protected] http://lists.ximian.com/mailman/listinfo/mono-aspnet-list
