HermaFx.X509Certificates.CertificateString._GetCertificate C# (CSharp) Метод

        public X509Certificate2 _GetCertificate()
        {
            X509Store store = null;
            X509Certificate2Collection certs = null;
            var sn = this.StoreName.GetValueOrDefault(SysX509.StoreName.My);
            var sl = this.StoreLocation.GetValueOrDefault(SysX509.StoreLocation.LocalMachine);
            var xft = this.X509FindType.GetValueOrDefault(SysX509.X509FindType.FindByThumbprint);

            try
            {
                if (this.X509FindBy != null)
                {
                    switch (this.X509FindBy.Value)
                    {
                        default:
                            throw new NotImplementedException("Unsupported X509FindBy method.");
                    }
                }

                // Try by looking up in store..
                store = new X509Store(sn, sl);
                store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
                certs = store.Certificates.Find(xft, this.X509FindValue, false);

                if (certs == null || certs.Count == 0)
                {
                    var str = string.Format("No valid certificate found for: {0}", _certificateString);
                    throw new ApplicationException(str);
                }

                if (certs.Count > 1)
                {
                    var str = string.Format("More than one matching certificate found for: {0}", _certificateString);
                    throw new ApplicationException(str);
                }

            #if false // FIXME: Setup certificate validation on mono
                if (!certs[0].Verify())
                {
                    var str = string.Format("Certificate verification failed for: {0}", certificateString);
                    throw new ApplicationException(str);
                }
            #endif

                // Fix to avoid mono's bug #1201
                // See: https://github.com/mono/mono/commit/b52404b35394c9941b521622564e3dc061c95118
                if (!string.IsNullOrEmpty(this.KeyContainerName))
                {
                    var csp = new CspParameters();
                    csp.KeyContainerName = this.KeyContainerName;
                    csp.Flags = CspProviderFlags.UseExistingKey;
                    csp.Flags = csp.Flags | (sl == SysX509.StoreLocation.LocalMachine ? CspProviderFlags.UseMachineKeyStore : 0);
                    certs[0].PrivateKey = new RSACryptoServiceProvider(csp);
                }

                return certs[0];
            }
            finally
            {
                if (store != null)
                    store.Close();
            }
        }