c# - 请求被中止：无法创建 SSL/TLS 安全通道 C# SPML

Question

全部，

我对 SPML 或网络服务完全陌生。我知道有很多关于这个问题的问题。我已经尝试了我能找到的一切。但是，我想我的问题是不知道如何格式化请求。

  protected void Page_Load(object sender, EventArgs e)
    {

        AddRequestType addreq = new AddRequestType();
        addreq.executionMode = ExecutionModeType.asynchronous;
        addreq.returnData = ReturnDataType.identifier;
        identity ident = new identity();
        ident.username = new string[] { "jsmith" };

        X509Store store = new X509Store(StoreName.TrustedPublisher, StoreLocation.LocalMachine);
        store.Open(OpenFlags.ReadOnly);
        var cert = store.Certificates;

        ServicePointManager.Expect100Continue = true;
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls11;

        SPMLService client = new SPMLService();
        client.UseDefaultCredentials = true;

        var res = client.SPMLAddRequest(addreq);

        AddResponseType addresp = new AddResponseType();
        //addresp.requestID={ requestID};
        var status = addresp.status;
        var error = addresp.error;
        var error_msg = addresp.errorMessage;
    }

我在计算机上有一个证书，我可以阅读该证书。非常感谢任何有关如何创建 SMPL 请求的指导。