multiple headers to the GET request

Question

How can I pass multiple headers to the GET request. below is my code. the response code is always BadReqest. Not sure what am I doing wrong..

var parameters = new PayParam
{
    token = "12345"
};
var json = JsonSerializer.Serialize(parameters);
using (HttpClient client = new HttpClient())
{
    client.BaseAddress = new Uri("https://test/test1");
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, client.BaseAddress);
    client.DefaultRequestHeaders.Add("ApiKey", "ABC12345");
    client.DefaultRequestHeaders.Add("MerchantCode", "Demo1");
    client.DefaultRequestHeaders.Add("MerchantKey", "Demo2");
    request.Content = new StringContent(json, Encoding.UTF8, "application/json");
    HttpResponseMessage response = await client.SendAsync(request);
    if (response.IsSuccessStatusCode)
    {
        var jsonString = await response.Content.ReadAsStringAsync();
        var data = JsonSerializer.Deserialize<PayParam>(jsonString);
        //Console.WriteLine($"tok: {data?.token}");
        string token = data?.token.ToString();
    }
    else
    {
        Console.WriteLine("Request failed: " + response.StatusCode);
    }

Any help will be highly appreciated.

Answer 1

Hi @Anjali Agarwal , Welcome to Microsoft Q&A,

In GET request, you should not add Content to the request, because GET request has no request body. In addition, the Uri parameter of HttpRequestMessage should be a relative path, not client.BaseAddress. You can set client.BaseAddress as the base URL and use the relative path as the path of HttpRequestMessage.

var parameters = new PayParam
{
    token = "12345"
};
var json = JsonSerializer.Serialize(parameters);

using (HttpClient client = new HttpClient())
{
    client.BaseAddress = new Uri("https://test/test1");
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    client.DefaultRequestHeaders.Add("ApiKey", "ABC12345");
    client.DefaultRequestHeaders.Add("MerchantCode", "Demo1");
    client.DefaultRequestHeaders.Add("MerchantKey", "Demo2");
    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, ""); 
    HttpResponseMessage response = await client.SendAsync(request);

    if (response.IsSuccessStatusCode)
    {
        var jsonString = await response.Content.ReadAsStringAsync();
        var data = JsonSerializer.Deserialize<PayParam>(jsonString);
        string token = data?.token.ToString();
    }
    else
    {
        Console.WriteLine("Request failed: " + response.StatusCode);
    }
}

Best Regards,

Jiale

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