Change response headers on media type formatter for asp net web api


ASP.NET is a popular programming language used for building web applications. One common requirement in web development is the to change response headers on type formatters in ASP.NET Web API. In this article, we will explore how to achieve this examples.

Understanding Media Type Formatters

Before we dive into changing response headers, let's first understand what media type formatters are in ASP.NET Web API. Media type formatters are responsible for serializing and deserializing data between the server and the client. They the format of the data being sent or received, such as JSON or XML.

Changing Response Headers

To change response headers on media type formatters in ASP.NET Web API, we can utilize the MediaTypeHeaderValue class. This class allows us to set various properties of the media type, including the response headers.

Let's consider an example where we want to add a custom response header called “X-Custom-Header” with a value of “Custom Value” to the JSON media type formatter.

using System.Net.Http.Headers;

// Get the JSON media type formatter
var jsonFormatter = GlobalConfiguration.Configuration.Formatters.JsonFormatter;

// Create a new instance of MediaTypeHeaderValue
var mediaType = new MediaTypeHeaderValue("/json");

// Add the custom response header
mediaType.Parameters.Add(new NameValueHeaderValue("X-Custom-Header", "Custom Value"));

// Set the media type formatter's media type

In the above example, we first retrieve the JSON media type formatter from the configuration. We then create a new instance of MediaTypeHeaderValue and set its media type to “application/json”. Next, we add the custom response header using the Parameters property of the media type. Finally, we the supported media of the JSON formatter to include our modified media type.


Changing response headers on media type formatters in ASP.NET Web API is a powerful feature that allows us to customize the of our web applications. By utilizing the MediaTypeHeaderValue class, we can easily add or modify response headers for specific media types. This flexibility enables us to meet the unique requirements of our applications and provide a better user .

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