如何使用WebRequest通过https访问SSL加密的站点？

您正在按照正确的方式进行操作，但是用户可能会向安装了无效SSL证书的站点提供URL。如果在发出实际的Web请求之前放入以下行，则可以忽略这些证书问题：

ServicePointManager.ServerCertificatevalidationCallback = new System.Net.Security.RemoteCertificatevalidationCallback(AcceptAllCertifications);

在哪里

AcceptAllCertifications

public bool AcceptAllCertifications(object sender, System.Security.Cryptography.X509Certificates.X509Certificate certification, System.Security.Cryptography.X509Certificates.X509Chain chain, System.Net.Security.SslPolicyErrors sslPolicyErrors){    return true;}