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Editorial Team
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Asked: 2026-06-13T00:20:30+00:00

I’m currently watching a video course about ASP.NET Web API. When a controller gets

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I’m currently watching a video course about ASP.NET Web API. When a controller gets called, the data gets returned in JSON by default. I was just wondering, because when I copy this sample project from the video, I get XML.

The frustration is big, please help me to solve this.

I’m pretty new to ASP.NET Web API, so please bear with me.

UPDATE

The controller doesn’t contain special code. It’s the simple code, which gets generated from the API Controller with empty read/write actions template.

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1 Answer

  1. Editorial Team

    ASP.NET WebAPI comes with built-in content negotitation therefore the format of the return value is determined by the request itself – more specifically by the Accept/Content-Type headers (depending on which ones are present, Accept header appears to be favoured over the Content-type).

    I assume you’re viewing the results in a browser and by default it’s probably asking for application/xml. You will need to toy around with some settings/developer tools on the browser and force it to send Content-Type: application/json to get the correct response (assuming your returning HttpResponseMessage).

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