C#利用HttpWebRequest进行post请求的示例（HTTPS）

1 HttpWebRequest 方式

C#利用HttpWebRequest进行post请求的示例（HTTPS）

 

2 WebClient 方式

　　　　 static string PostData(string url, NameValueCollection headers, NameValueCollection data)
        {
            if (url.StartsWith("https"))
            {
                // 解决WebClient不能请求https url的问题
                System.Net.ServicePointManager.ServerCertificateValidationCallback +=
                    delegate (object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
                             System.Security.Cryptography.X509Certificates.X509Chain chain,
                             System.Net.Security.SslPolicyErrors sslPolicyErrors)
                    {
                        return true;

                    };
            }

            WebClient client = new WebClient();
            client.Headers.Add(headers);
            byte[] byteArr = client.UploadValues(url, data);

            string result = Encoding.UTF8.GetString(byteArr);
            return result;
        }

 

3 c# .net 4.0 HttpWebRequest 访问https TLS1.2 解决方案(推荐这个)

 c# .net 4.0 HttpWebRequest 访问https TLS1.2 解决方案

// 在HttpWebRequest或WebClient前面加上这个
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;