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Githubの ITfoxtec.Identity.Saml2 サンプル プロジェクトはすべて、Startup クラスの ConfigureServices メソッドで SAML 構成を読み込みます。すべての構成をデータベースに保存しました。実行時に (.Net Core プロジェクトの開始後) コード内から SAML 構成を読み込む方法はありますか?

public void ConfigureServices(IServiceCollection services)
    {
        services.Configure<Saml2Configuration>(Configuration.GetSection("Saml2"));
        services.Configure<Saml2Configuration>(saml2Configuration =>
        {
            //saml2Configuration.SignAuthnRequest = true;
            saml2Configuration.SigningCertificate = CertificateUtil.Load(AppEnvironment.MapToPhysicalFilePath(Configuration["Saml2:SigningCertificateFile"]), Configuration["Saml2:SigningCertificatePassword"]);

            //saml2Configuration.SignatureValidationCertificates.Add(CertificateUtil.Load(AppEnvironment.MapToPhysicalFilePath(Configuration["Saml2:SignatureValidationCertificateFile"])));
            saml2Configuration.AllowedAudienceUris.Add(saml2Configuration.Issuer);

            var entityDescriptor = new EntityDescriptor();
            entityDescriptor.ReadIdPSsoDescriptorFromUrl(new Uri(Configuration["Saml2:IdPMetadata"]));
            if (entityDescriptor.IdPSsoDescriptor != null)
            {
                saml2Configuration.AllowedIssuer = entityDescriptor.EntityId;
                saml2Configuration.SingleSignOnDestination = entityDescriptor.IdPSsoDescriptor.SingleSignOnServices.First().Location;
                saml2Configuration.SingleLogoutDestination = entityDescriptor.IdPSsoDescriptor.SingleLogoutServices.First().Location;
                saml2Configuration.SignatureValidationCertificates.AddRange(entityDescriptor.IdPSsoDescriptor.SigningCertificates);
                if (entityDescriptor.IdPSsoDescriptor.WantAuthnRequestsSigned.HasValue)
                {
                    saml2Configuration.SignAuthnRequest = entityDescriptor.IdPSsoDescriptor.WantAuthnRequestsSigned.Value;
                }
            }
            else
            {
                throw new Exception("IdPSsoDescriptor not loaded from metadata.");
            }
        });

        services.AddSaml2(slidingExpiration: true);

        services.AddControllersWithViews();
    }
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