mvc 4 web api add custom response http header

Question

Can we add the extra http response header item example "Last Updated" beside the default response header?

example when I call (Request):
localHost:12345/API/GetInfo
with header:
Host: localHost:12345
......

then the api will reply the header with(Response):
HTTP/1.1 200 OK
Content-Length: XX
Content-Type: XXX
Last-Update: The value and the value generate from the API function

HoberMellow · Accepted Answer · 2012-11-21 07:16:12Z

26

You can add header by using this code:

HttpContext.Current.Response.AppendHeader("Last-Update", value);

edited Nov 21, 2012 at 7:16

answered Nov 21, 2012 at 5:54

HoberMellow

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8 Comments

Eng Boon Over a year ago

thanks bro. I Modified to HttpContext.Current.Response.AppendHeader("Last-Update", value);

HoberMellow Over a year ago

Oh, sorry, my mistake. I fixed my answer. You're weclome)

pomber Over a year ago

Any way of doing it without using System.Web.HttpContext?

Jimmy Hoffa Over a year ago

This is not encouraged, self hosting means HttpContext.Current is not available, so this will not always work.

Tola Ch. Over a year ago

I got another problem: when Browser perform next request. it does not not include the header "Last-Update" back to server. How to make browser return all headers from its prior response?

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JTech · Accepted Answer · 2013-07-02 12:06:28Z

9

FYI there is an official HTTP Header that you can use to represent the DateTime a resource was last updated.

It is the 'Last-Modified' Header (See section 14.29 on Section 14 page of the specification).

You add it to your response like this:

Response.Content.Headers.LastModified = yourResource.LastUpdatedDateTime;

answered Jul 2, 2013 at 12:06

JTech

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1 Comment

Eng Boon Over a year ago

Sorry, I'm looking for custom response header(it can be other beside date), your answer was standard response header.

TapiwaJoel Mudavanhu · Accepted Answer · 2016-04-01 09:39:12Z

0

In MVC 5 just add

 Response.AppendHeader("header", "value");

answered Apr 1, 2016 at 9:39

TapiwaJoel Mudavanhu

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Comments

Tola Ch. · Accepted Answer · 2016-06-13 18:49:35Z

0

I just found a solution. What I need to do is, response HTTP header in cookie format. That way, browser will always return it back to my web server.

answered Jun 13, 2016 at 18:49

Tola Ch.

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