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c#dotnet-httpclient

How can we add Header Parameters to HTTPCLIENT object

C# How can we add Header Parameters to HTTPCLIENT object Post-Man Screen-Shot:

A screen shot of POST-MAN which I'm capable of doing there

I have tried the following code snippet as well but, no use.

HttpClient _client = new HttpClient { BaseAddress = new Uri(ServiceBaseURL) };
_client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
_client.DefaultRequestHeaders.TryAddWithoutValidation("Param1", "Value1");
_client.DefaultRequestHeaders.TryAddWithoutValidation("Param2", "Value2");
_client.DefaultRequestHeaders.TryAddWithoutValidation("Param3", "Value3");

Looking forward for help. I really appreciate your help.

Solution

  • I think you want the regular DefaultRequestHeaders property and not the Accept property:

    _client.DefaultRequestHeaders.Add("Param1", "Value1");

    You can also add the headers as part of the message (if these parameters change per request use this way instead):

    using (var message = new HttpRequestMessage(HttpMethod.Post, "/someendpoint"))
{
    message.Headers.Add("Param1", "Value1");
}