using Disco.Models.Repository; using System; using System.Security.Cryptography.X509Certificates; namespace Disco.BI.Extensions { public static class WirelessCertificateExtensions { public static System.DateTime? CertificateExpirationDate(this DeviceCertificate wc) { if (wc.Content == null || wc.Content.Length == 0) { return null; } X509Certificate2 c = new X509Certificate2(wc.Content, "password"); return c.NotAfter; } } }