"請求被中止: 未能創建 SSL/TLS 安全通道"解決辦法，ssltls

"請求被中止: 未能創建 SSL/TLS 安全通道"解決辦法，ssltls

1.安裝證書：

手動雙擊證書安裝，過程略

2.分配權限：

在控制台中找到安裝的證書，右鍵選擇“管理私鑰”，

添加自己需要的權限，如果在測試可以直接添加Everyone

3.修改代碼：public static string Refund(string urlWithParams)

{
    ServicePointManager.Expect100Continue = true;
    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;   //協議按需選擇，不行就都試一遍
    ServicePointManager.ServerCertificateValidationCallback = (object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) => { return true; };

    HttpWebRequest webRequest = (HttpWebRequest)HttpWebRequest.Create(urlWithParams);
    webRequest.Method = "GET";

    //查找我們導入的證書
    X509Store certStore = new X509Store(StoreName.My, StoreLocation.LocalMachine);
    certStore.Open(OpenFlags.ReadOnly);
    X509Certificate2Collection certCollection = certStore.Certificates.Find(X509FindType.FindBySubjectName, "安裝的證書名字", false);
    webRequest.ClientCertificates.Add(certCollection[0]);

    using (WebResponse webResponse = webRequest.GetResponse())
    {
        var sr = new StreamReader(webResponse.GetResponseStream(), Encoding.UTF8);
        var responseData = sr.ReadToEnd();
        return responseData;
    }
}