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X509NameType Enumeration

Specifies the type of name the X509 certificate contains.

Namespace:  System.Security.Cryptography.X509Certificates
Assembly:  System (in System.dll)

public enum X509NameType

Member nameDescription
SimpleNameThe simple name of a subject or issuer of an X509 certificate.
EmailNameThe email address of the subject or issuer associated of an X509 certificate.
UpnNameThe UPN name of the subject or issuer of an X509 certificate.
DnsNameThe DNS name associated with the alternative name of either the subject or issuer of an X509 certificate.
DnsFromAlternativeNameThe DNS name associated with the alternative name of either the subject or the issuer of an X.509 certificate. This value is equivalent to the DnsName value.
UrlNameThe URL address associated with the alternative name of either the subject or issuer of an X509 certificate.

The name type can be a simple name, an email address, a User Principal Name (UPN), a Domain Name System (DNS) name or a URL. An X509 certificate can have one or more of these names. You can obtain the name of a certificate using the method GetNameInfo.

The following example opens the current user certificate store, selects only active certificates, then allows the user to select one or more certificates. The example then writes certificate information to the console.


using System;
using System.Security.Cryptography;
using System.Security.Permissions;
using System.IO;
using System.Security.Cryptography.X509Certificates;

class CertSelect
{
	static void Main()
	{

			X509Store store = new X509Store("MY",StoreLocation.CurrentUser);
			store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
			X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
			X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,DateTime.Now,false);
			X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection, "Test Certificate Select","Select a certificate from the following list to get information on that certificate",X509SelectionFlag.MultiSelection);
			Console.WriteLine("Number of certificates: {0}{1}",scollection.Count,Environment.NewLine);
			foreach (X509Certificate2 x509 in scollection)
			{
				try
				{
					byte[] rawdata = x509.RawData;
					Console.WriteLine("Content Type: {0}{1}",X509Certificate2.GetCertContentType(rawdata),Environment.NewLine);
					Console.WriteLine("Friendly Name: {0}{1}",x509.FriendlyName,Environment.NewLine);
					Console.WriteLine("Certificate Verified?: {0}{1}",x509.Verify(),Environment.NewLine);
					Console.WriteLine("Simple Name: {0}{1}",x509.GetNameInfo(X509NameType.SimpleName,true),Environment.NewLine);
					Console.WriteLine("Signature Algorithm: {0}{1}",x509.SignatureAlgorithm.FriendlyName,Environment.NewLine);
					Console.WriteLine("Private Key: {0}{1}",x509.PrivateKey.ToXmlString(false),Environment.NewLine);
					Console.WriteLine("Public Key: {0}{1}",x509.PublicKey.Key.ToXmlString(false),Environment.NewLine);
					Console.WriteLine("Certificate Archived?: {0}{1}",x509.Archived,Environment.NewLine);
					Console.WriteLine("Length of Raw Data: {0}{1}",x509.RawData.Length,Environment.NewLine);
					X509Certificate2UI.DisplayCertificate(x509);
					x509.Reset();
				}
				catch (CryptographicException)
				{
				   Console.WriteLine("Information could not be written out for this certificate.");
				}
			}
			store.Close();
	}
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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