如何从C＃或SSIS中的所需证书https url下载zip文件？

Question

我有一个HTTPS URL来下载zip文件，但我需要从站点安装证书。我已将它安装在我的机器上。

这是我的代码：

ServicePointManager.Expect100Continue = true;
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
        //RemoteCertificateValidationCallback ServerCertificateValidationCallback = delegate { return true; };
        System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate (object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };
        using (WebClient wc = new WebClient())
        {
            wc.DownloadFile("https://markets.midwestiso.org/MISO/getSettlementStatementFile?entity=CORP_SUB3&nodeId=key0", @"C:\files\1.zip");
        }

但是我收到以下错误消息：

  

请求已中止：无法创建SSL / TLS安全通道。

请帮忙。我无法找到解决方案。