OpenFlags Enum

Reference

Definition

Namespace:: System.Security.Cryptography.X509Certificates

Assembly:: System.Security.Cryptography.X509Certificates.dll

Assembly:: System.Security.Cryptography.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

This enumeration supports a bitwise combination of its member values.

public enum class OpenFlags

[System.Flags]
public enum OpenFlags

[<System.Flags>]
type OpenFlags =

Public Enum OpenFlags

Inheritance: Object

ValueType

Enum
OpenFlags

Attributes: FlagsAttribute

Fields

Name	Value	Description
ReadOnly	0	Open the X.509 certificate store for reading only.
ReadWrite	1	Open the X.509 certificate store for both reading and writing.
MaxAllowed	2	Open the X.509 certificate store for the highest access allowed.
OpenExistingOnly	4	Opens only existing stores; if no store exists, the Open(OpenFlags) method will not create a new store.
IncludeArchived	8	Open the X.509 certificate store and include archived certificates.

Examples

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.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;
using namespace System::IO;
int main()
{
   
   //Create new X509 store called teststore from the local certificate store.
   X509Store ^ store = gcnew X509Store( "teststore",StoreLocation::CurrentUser );
   store->Open( OpenFlags::ReadWrite );
   X509Certificate2 ^ certificate = gcnew X509Certificate2;
   
   //Create certificates from certificate files.
   //You must put in a valid path to three certificates in the following constructors.
   X509Certificate2 ^ certificate1 = gcnew X509Certificate2( "c:\\mycerts\\*****.cer" );
   X509Certificate2 ^ certificate2 = gcnew X509Certificate2( "c:\\mycerts\\*****.cer" );
   X509Certificate2 ^ certificate5 = gcnew X509Certificate2( "c:\\mycerts\\*****.cer" );
   
   //Create a collection and add two of the certificates.
   X509Certificate2Collection ^ collection = gcnew X509Certificate2Collection;
   collection->Add( certificate2 );
   collection->Add( certificate5 );
   
   //Add certificates to the store.
   store->Add( certificate1 );
   store->AddRange( collection );
   X509Certificate2Collection ^ storecollection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
   Console::WriteLine( "Store name: {0}", store->Name );
   Console::WriteLine( "Store location: {0}", store->Location );
   System::Collections::IEnumerator^ myEnum = storecollection->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      X509Certificate2 ^ x509 = safe_cast<X509Certificate2 ^>(myEnum->Current);
      Console::WriteLine( "certificate name: {0}", x509->Subject );
   }

   
   //Remove a certificate.
   store->Remove( certificate1 );
   X509Certificate2Collection ^ storecollection2 = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
   Console::WriteLine( "{1}Store name: {0}", store->Name, Environment::NewLine );
   System::Collections::IEnumerator^ myEnum1 = storecollection2->GetEnumerator();
   while ( myEnum1->MoveNext() )
   {
      X509Certificate2 ^ x509 = safe_cast<X509Certificate2 ^>(myEnum1->Current);
      Console::WriteLine( "certificate name: {0}", x509->Subject );
   }

   
   //Remove a range of certificates.
   store->RemoveRange( collection );
   X509Certificate2Collection ^ storecollection3 = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
   Console::WriteLine( "{1}Store name: {0}", store->Name, Environment::NewLine );
   if ( storecollection3->Count == 0 )
   {
      Console::WriteLine( "Store contains no certificates." );
   }
   else
   {
      System::Collections::IEnumerator^ myEnum2 = storecollection3->GetEnumerator();
      while ( myEnum2->MoveNext() )
      {
         X509Certificate2 ^ x509 = safe_cast<X509Certificate2 ^>(myEnum2->Current);
         Console::WriteLine( "certificate name: {0}", x509->Subject );
      }
   }

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

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 ();
    }	
}

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

Remarks

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

Applies to

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