c# - Adding headers when using httpClient.GetAsync

Question

I'm implementing an API made by other colleagues with Apiary.io, in a Windows Store app project.

They show this example of a method I have to implement:

var baseAddress = new Uri("https://private-a8014-xxxxxx.apiary-mock.com/");

using (var httpClient = new HttpClient{ BaseAddress = baseAddress })
{
    using (var response = await httpClient.GetAsync("user/list{?organizationId}"))
    {
        string responseData = await response.Content.ReadAsStringAsync();
    }
}

In this and some other methods, I need to have a header with a token that I get before.

Here's an image of Postman (chrome extension) with the header I'm talking about:

How do I add that Authorization header to the request?

Answer 1

A later answer, but because no one gave this solution...

If you do not want to set the header on the HttpClient instance by adding it to the DefaultRequestHeaders, you could set headers per request.

But you will be obliged to use the SendAsync() method.

This is the right solution if you want to reuse the HttpClient -- which is a good practice for

• performance and port exhaustion problems
• doing something thread-safe
• not sending the same headers every time

Use it like this:

using (var requestMessage =
            new HttpRequestMessage(HttpMethod.Get, "https://your.site.com"))
{
    requestMessage.Headers.Authorization =
        new AuthenticationHeaderValue("Bearer", your_token);
    
    await httpClient.SendAsync(requestMessage);
}