How to get authorization key values in rest API service via C#?

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I want to get authorization key values in Rest API Service via c#. Currently I am getting null exception while trying to fetch the key values. I am using asp.net application and invoking via postman and the authorization key values are set. I am getting httpcontext as null while debugging.

HttpContext httpContext = HttpContext.Current;

What I have tried:

Code as below:

HttpContext httpContext = HttpContext.Current;


NameValueCollection headerList = httpContext.Request.Headers;
var authorizationField = headerList.Get("Authorization");

Posted 18-Jan-23 18:38pm

Member 7513082

Updated 18-Jan-23 19:46pm

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Laiju k 19-Jan-23 0:48am

which .Net version you are using.

Member 7513082 19-Jan-23 0:59am

I am using 4.6.1 framework. But i am getting null for httpcontext

Graeme_Grant 19-Jan-23 0:51am

How does this question differ to this one: How to fetch username and password during basic authentication for json request in C#?[^] ???

Member 7513082 19-Jan-23 1:00am

In this i have updated the code more clearly. I am not getting a response for this issue. Request invoked through postman but the httpcontext null issue remains

Richard Deeming 19-Jan-23 6:05am

If HttpContext.Current is returning null, then you're either executing code on a background thread, or you're executing code outside of the context of an HTTP request.

Since you haven't shown the context of the problematic code, we can't tell you which, nor how to fix it.

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Graeme_Grant · Answer 1 · 2023-01-18T19:46:00

Watch this to learn how OAuth works: OAuth 2.0 & 2.1 Tutorial - YouTube[^]
Watch this for Authentication: ASP.NET Core Authentication (.NET 7 Minimal Apis C#) - YouTube[^]
Watch this for Authorization: ASP.NET Core Authorization (.NET 7 Minimal Apis C#) - YouTube[^]

He has other videos on the subject.