Get Request Body, Parameters & Headers in C# Controller for Incoming HTTP Requests

Learn how to access the body, parameters and headers of an incoming HTTP request in a C# controller. Use Request object or attributes to get the data.

In a C# controller, you can use the Request object to access the body, parameters, and headers of an incoming HTTP request. Here is an example of how you can access these values in a controller action:

[HttpPost]
public IActionResult Create([FromBody] string body, [FromQuery] string parameter, [FromHeader] string header)
{
    // Access the request body using the "body" parameter
    var requestBody = body;
    // Access query parameters using the "parameter" parameter
    var queryParameter = parameter;
    // Access headers using the "header" parameter
    var requestHeader = header;
    // Your code to handle the request
    ...
}

In the above example, the “[FromBody]” attribute is used to bind the “body” parameter to the request body, the “[FromQuery]” attribute is used to bind the “parameter” parameter to the query string, and the “[FromHeader]” attribute is used to bind the “header” parameter to the request header.

Alternatively, you can use Request.Form, Request.Query and Request.Headers to get the respective data.

var body = Request.Form["body"];
var parameter = Request.Query["parameter"];
var header = Request.Headers["header"];

Note that this is a simplified example, and in real-world scenarios, the body, parameters, and headers are usually deserialized into objects, and model validation is done before handling the request.