public NSObject ObjectValueForTableColumn (NSTableView table, NSTableColumn col, int row)
		{
			var value = (NSString)string.Empty;
			ActionHelper.Execute (delegate() {
				if (Entries != null) {
					var obj = (this.Entries [row]) as CertificateDto;
					X509Certificate2 cert;
					switch (col.Identifier) {
					case "Name":
						value = (NSString)obj.Chain;
						break;
					case "Status": 
						value = (NSString)(obj.IsSigner ? "ACTIVE" : "IN-ACTIVE");
						break;
					case "IssuedBy": 
						cert = new X509Certificate2 (Encoding.ASCII.GetBytes (obj.Encoded));
						value = (NSString)cert.Issuer;
						break;
					case "IssuedOn": 
						cert = new X509Certificate2 (Encoding.ASCII.GetBytes (obj.Encoded));
						value = (NSString)cert.NotBefore.ToShortDateString ();
						break;
					case "Expiration": 
						cert = new X509Certificate2 (Encoding.ASCII.GetBytes (obj.Encoded));
						value = (NSString)cert.NotAfter.ToShortDateString ();
						break;
					case "Purpose": 
						cert = new X509Certificate2 (Encoding.ASCII.GetBytes (obj.Encoded));
						value = (NSString)cert.ToKeyUsage ();
						break;
					case "SubjectDn": 
						cert = new X509Certificate2 (Encoding.ASCII.GetBytes (obj.Encoded));
						value = (NSString)cert.Subject;
						break;
					case "Fingerprint": 
						cert = new X509Certificate2 (Encoding.ASCII.GetBytes (obj.Encoded));
						value = (NSString)cert.GetFormattedThumbPrint ();
						break;
					default:
						break;
					}
				}
			});
			return value;
		}