Get X509Certificate2 from Store

GetX509Certificate2.cs

private static X509Certificate2 GetX509Certificate2(string thumbprint)
{
    var store = new X509Store(StoreLocation.LocalMachine);
    store.Open(OpenFlags.ReadOnly);

    store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadOnly);
    var certificates = store.Certificates.Cast<X509Certificate2>().ToList();
    var cert =
        certificates.FirstOrDefault(
            x => x.Thumbprint.Equals(thumbprint, StringComparison.InvariantCultureIgnoreCase));

    store.Close();

    return cert;
}