C# HttpRequestMessage Content-Type 强制为“application/json”

Question

I'm creating an HttpClient request to post an object to an API endpoint. The API endpoint only accepts "application/json" but my application changes the type to "application/json; charset=utf-8" which the API won't accept. What do I change in the StringContent to make it so it is only 'application/json'? I tried changing the encoding type from Default to null to UTF8 but that has not changed it.

 var httpClientHandler = new HttpClientHandler();
                httpClientHandler.ServerCertificateCustomValidationCallback = (message, cert, chain, sslPolicyErrors) =>
                {
                    return true;
                };
                var client = new HttpClient(httpClientHandler);
                var webRequest = new HttpRequestMessage(HttpMethod.Post, base_url + url)
                {
                    Content = new StringContent(body, Encoding.Default, "application/json")
                };

Answer 1

Consider the following approach

content.Headers.Remove("Content-Type"); // "{application/json; charset=utf-8}" content.Headers.Add("Content-Type", "application/json");