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Editorial Team
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Asked: 2026-05-23T10:31:51+00:00

I have an ASP.NET WCF .svc interface which is accepting a POSTed form. I

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I have an ASP.NET WCF .svc interface which is accepting a POSTed form. I cannot control the POSTing client at all (which happens to be the IBM Lotus Forms Viewer application), but its behavior is that it POSTs itself to a URL of my choosing and the response is popped up in Internet Explorer as a locally served temporary file with an extension controlled by the mime-type.

I am new to WCF REST services, but I am having a hard time controlling the response, which keeps getting wrapped in XML tags. Is there a way to turn off all output wrapping and control exactly what is returned from the WCF operation?

I can point the form to something other than a WCF service (like an .aspx file), but I thought it would be useful at least to learn how the formatting is controlled before I made that decision.

[EDIT] For clarification, my current service interface prototype looks like this:

[OperationContract]
[WebInvoke(Method = "POST", UriTemplate = "/AF1067/SubmitForm",
     BodyStyle = WebMessageBodyStyle.Bare)]
public string AF1067_SubmitForm(System.IO.Stream fileContents) { ... }

[EDIT] User @Kon found this link which had the answer — if I return a System.IO.Stream, the response will stop being wrapped.

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1 Answer

  1. Editorial Team

    Continuing from our comments, I still think this may have something to do with the requestor’s settings. Perhaps the bare POST which doesn’t specify a content type setting defaults to the wrong one? Try to explicitly set it to “application/json” or “application/json; charset=utf-8” Just throwing ideas out there.

    The other thing to make sure of is that your service method’s ResponseFormat is set to JSON as well.

    Btw, nice method name. 😉

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