问c#如何通过dotAPNS (nuget )发送ios通知/如何在c#中读取证书？

EN

            var cer = HttpContext.Current.Server.MapPath("../../Security/distribution.cer");

            var x509 = new X509Certificate2(File.ReadAllBytes(cer)).ToString();


            var options = new ApnsJwtOptions()
            {
                BundleId = "bundleID",
                CertContent = x509,
                KeyId = "keyID",
                TeamId = "teamID"
            };

        var apns = ApnsClient.CreateUsingJwt(new HttpClient(new WinHttpHandler()), options);
        var push = new ApplePush(ApplePushType.Alert)
            .AddAlert("title", model.UserName + ", commented on your post.")
            .AddToken("deviceToken");