xml parsing - Wrap XML Output on ASP.NET Web API -

so i'm working on web api roku channel interact send , receive data. roku sdk has built in xml parser easy use, problem roku parse xml wrapped in <rsp stat="ok"></rsp> element. don't see how or override xml output on web api wrap <rsp> element.

so question is, how can override xml formatter , insert <rsp stat="ok"> before output, , </rsp> after?

if ensuring return xml removing json formatter this

config.formatters.remove(config.formatters.jsonformatter); 

you can use message handler add envelope blindly responses this.

public class myhandler : delegatinghandler {     protected override async task<httpresponsemessage> sendasync(                                        httprequestmessage request,                                             cancellationtoken cancellationtoken)     {         var response = await base.sendasync(request, cancellationtoken);         string responsebody = "<rsp stat=\"ok\">" +                                    await response.content.readasstringasync() +                               "</rsp>";         response.content = new stringcontent(                           responsebody, encoding.utf8, "application/xml");         return response;     } }