我正在尝试获取与以下C#方法等效的方法:publicbyte[]SignHash(byte[]btHash,stringSN){stringstrSignature=string.Empty;X509Storex509store=null;x509store=newX509Store(StoreLocation.CurrentUser);x509store.Open(OpenFlags.ReadOnly);foreach(X509Certificate2x509inx509store.Certificates){if(x509.SerialNumber.ToLower().Contai