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.X509CertificatesAssembly: System (in System.dll)
| Member name | Description | |
|---|---|---|
![]() | ReadOnly | Open the X.509 certificate store for reading only. |
![]() | ReadWrite | Open the X.509 certificate store for both reading and writing. |
![]() | MaxAllowed | Open the X.509 certificate store for the highest access allowed. |
![]() | OpenExistingOnly | Opens only existing stores; if no store exists, the Open method will not create a new store. |
![]() | IncludeArchived | Open 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.
Imports System Imports System.Security.Cryptography Imports System.Security.Cryptography.X509Certificates Imports System.IO Class X509store2 Shared Sub Main(ByVal args() As String) 'Create new X509 store called teststore from the local certificate store. Dim store As New X509Store("teststore", StoreLocation.CurrentUser) store.Open(OpenFlags.ReadWrite) Dim certificate As New X509Certificate2() 'Create certificates from certificate files. 'You must put in a valid path to three certificates in the following constructors. Dim certificate1 As New X509Certificate2("c:\mycerts\*****.cer") Dim certificate2 As New X509Certificate2("c:\mycerts\*****.cer") Dim certificate5 As New X509Certificate2("c:\mycerts\*****.cer") 'Create a collection and add two of the certificates. Dim collection As New X509Certificate2Collection() collection.Add(certificate2) collection.Add(certificate5) 'Add certificates to the store. store.Add(certificate1) store.AddRange(collection) Dim storecollection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection) Console.WriteLine("Store name: {0}", store.Name) Console.WriteLine("Store location: {0}", store.Location) Dim x509 As X509Certificate2 For Each x509 In storecollection Console.WriteLine("certificate name: {0}", x509.Subject) Next x509 'Remove a certificate. store.Remove(certificate1) Dim storecollection2 As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection) Console.WriteLine("{1}Store name: {0}", store.Name, Environment.NewLine) Dim x509a As X509Certificate2 For Each x509a In storecollection2 Console.WriteLine("certificate name: {0}", x509a.Subject) Next x509a 'Remove a range of certificates. store.RemoveRange(collection) Dim storecollection3 As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection) Console.WriteLine("{1}Store name: {0}", store.Name, Environment.NewLine) If storecollection3.Count = 0 Then Console.WriteLine("Store contains no certificates.") Else Dim x509b As X509Certificate2 For Each x509b In storecollection3 Console.WriteLine("certificate name: {0}", x509b.Subject) Next x509b End If 'Close the store. store.Close() End Sub End Class
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.
