Set Authorization/Content-Type headers when call HTTPClient.PostAsync

Question

Where can I set headers to REST service call when using simple HTTPClient?

I do :

HttpClient client = new HttpClient(); var values = new Dictionary<string, string> {     {"id", "111"},     {"amount", "22"} }; var content = new FormUrlEncodedContent(values); var uri = new Uri(@"https://some.ns.restlet.uri");  var response = await client.PostAsync(uri, content); var responseString = await response.Content.ReadAsStringAsync(); 

UPD

Headers I want to add:

{     "Authorization": "NLAuth nlauth_account=5731597_SB1, [email protected], nlauth_signature=Pswd1234567, nlauth_role=3",     "Content-Type": "application/json" } 

Should I do the following?

client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Authorization", "NLAuth nlauth_account=5731597_SB1, [email protected], nlauth_signature=Pswd1234567, nlauth_role=3","Content-Type":"application/json"); 

Answer 1

The way to add headers is as follows:

HttpClient client = new HttpClient(); client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "Your Oauth token"); 

Or if you want some custom header:

HttpClient client = new HttpClient(); client.DefaultRequestHeaders.Add("HEADERNAME", "HEADERVALUE"); 

This answer has SO responses already, see below:

• Adding headers when using httpClient.GetAsync
• Setting Authorization Header of HttpClient

UPDATE

Seems you are adding two headerrs; authorization and content type.

string authValue = "NLAuth nlauth_account=5731597_SB1,[email protected], nlauth_signature=Pswd1234567, nlauth_role=3"; string contentTypeValue = "application/json";  client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(authValue); client.DefaultRequestHeaders.Add("Content-Type", contentTypeValue);