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OpenFlags Enumeration

Specifies the way to open the X.509 certificate store.

This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.

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

[FlagsAttribute]
public enum OpenFlags

Member nameDescription
Supported by the .NET Compact FrameworkReadOnlyOpen the X.509 certificate store for reading only.
Supported by the .NET Compact FrameworkReadWriteOpen the X.509 certificate store for both reading and writing.
Supported by the .NET Compact FrameworkMaxAllowedOpen the X.509 certificate store for the highest access allowed.
Supported by the .NET Compact FrameworkOpenExistingOnlyOpens only existing stores; if no store exists, the Open method will not create a new store.
Supported by the .NET Compact FrameworkIncludeArchivedOpen the X.509 certificate store and include archived certificates.

The ReadOnly, ReadWrite, and MaxAllowed flags are mutually exclusive. The OpenExistingOnly flag is the only flag that does not require the CreateStore permission to be granted.

The following code example opens an X.509 certificate store, adds and deletes certificates, and then closes the store. It assumes you have three certificates to add to and remove from a local store.

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

public class X509store2
{
	public static void Main (string[] args)
	{
		//Create new X509 store called teststore from the local certificate store.
		X509Store store = new X509Store ("teststore", StoreLocation.CurrentUser);
		store.Open (OpenFlags.ReadWrite);
		X509Certificate2 certificate = new X509Certificate2 ();

		//Create certificates from certificate files. 
		//You must put in a valid path to three certificates in the following constructors.
		X509Certificate2 certificate1 = new X509Certificate2 ("c:\\mycerts\\*****.cer");
		X509Certificate2 certificate2 = new X509Certificate2 ("c:\\mycerts\\*****.cer");
		X509Certificate2 certificate5 = new X509Certificate2 ("c:\\mycerts\\*****.cer");

		//Create a collection and add two of the certificates.
		X509Certificate2Collection collection = new X509Certificate2Collection ();
		collection.Add (certificate2);
		collection.Add (certificate5);

		//Add certificates to the store.
		store.Add (certificate1);
		store.AddRange (collection);

		X509Certificate2Collection storecollection = (X509Certificate2Collection)store.Certificates;
		Console.WriteLine ("Store name: {0}", store.Name);
		Console.WriteLine ("Store location: {0}", store.Location);
		foreach (X509Certificate2 x509 in storecollection)
		{
			Console.WriteLine("certificate name: {0}",x509.Subject);
		}

		//Remove a certificate.
		store.Remove (certificate1);
		X509Certificate2Collection storecollection2 = (X509Certificate2Collection)store.Certificates;
		Console.WriteLine ("{1}Store name: {0}", store.Name, Environment.NewLine);
		foreach (X509Certificate2 x509 in storecollection2)
		{
			Console.WriteLine ("certificate name: {0}", x509.Subject);
		}

		//Remove a range of certificates.
		store.RemoveRange (collection);
		X509Certificate2Collection storecollection3 = (X509Certificate2Collection)store.Certificates;
		Console.WriteLine ("{1}Store name: {0}", store.Name, Environment.NewLine);
		if (storecollection3.Count == 0)
		{
			Console.WriteLine ("Store contains no certificates.");
		}
		else
		{
			foreach (X509Certificate2 x509 in storecollection3)
			{
				Console.WriteLine ("certificate name: {0}", x509.Subject);
			}
		}

		//Close the store.
		store.Close ();
	}	
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5

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