該請求已中止：無法創建SSL / TLS安全通道.Net 4.5.2

Question

當我調用第三方網絡服務時，請有人幫助我，它顯示：

Initializing
Generating WSDL
System.InvalidOperationException: General Error https://xxx ---> System.Net.WebException: There was an error downloading 'https:/xxx'. ---> System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
   at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
   at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request)
   at System.Web.Services.Discovery.DiscoveryClientProtocol.Download(String& url, String& contentType)
   --- End of inner exception stack trace ---
   at System.Web.Services.Discovery.DiscoveryClientProtocol.Download(String& url, String& contentType)
   at System.Web.Services.Discovery.DiscoveryClientProtocol.DiscoverAny(String url)
   at WebServiceStudio.Wsdl.ProcessRemoteUrls(DiscoveryClientProtocol client, StringCollection urls, XmlSchemas schemas, ServiceDescriptionCollection descriptions)
   --- End of inner exception stack trace ---
   at WebServiceStudio.Wsdl.ProcessRemoteUrls(DiscoveryClientProtocol client, StringCollection urls, XmlSchemas schemas, ServiceDescriptionCollection descriptions)
   at WebServiceStudio.Wsdl.Generate()

我已經嘗試使用X509證書，給用戶所有人完全許可。

Answer 1

當Web服務的SSL證書無效時，可能會發生這種情況。

要解決此問題，請嘗試以下代碼：

System.Net.ServicePointManager.ServerCertificateValidationCallback += new System.Net.Security.RemoteCertificateValidationCallback(delegate
{
    return true;
});

如果這解決了您的問題，則應檢查計算機上的證書。

正如@ dman2306所說，這僅是為了檢查證書是否是造成您問題的原因。 請勿在任何生產代碼中使用此代碼。