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X509Store::Certificates Property

 

Returns a collection of certificates located in an X.509 certificate store.

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

public:
property X509Certificate2Collection^ Certificates {
	X509Certificate2Collection^ get();
}

Property Value

Type: System.Security.Cryptography.X509Certificates::X509Certificate2Collection^

A collection of certificates.

This method returns a snapshot of the X.509 certificate store. Note that subsequent Add or Remove operations performed on the store will not have any effect on the collection that is returned. This snapshot is recalculated each time the property is called, so the use of this property inside an iterative function is not recommended.

This section contains two examples. The first example demonstrates how you can open standard X.509 stores and list the number of certificates in each.

The second example demonstrates how you can add and remove single certificates and ranges of certificates.

Example 1

This example tries to open each standard store in each standard location on the current computer. It prints a summary that shows whether each store exists and, if so, the number of certificates it contains.

The example creates an X509Store object for each combination of standard name and standard location. It calls the Open method with the OpenFlags::OpenExistingOnly flag, which opens the physical store only if it already exists. If the physical store exists, the example uses the Name, Location, and Certificates properties to display the number of certificates in the store.

No code example is currently available or this language may not be supported.

Example 2

This example opens an X.509 certificate store, adds and deletes certificates, and then closes the store. It assumes that 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();
}

StorePermission

for enumerating certificates in an X.509 certificate store. Security action: Demand. Associated enumeration: StorePermissionFlags::EnumerateCertificates

.NET Framework
Available since 2.0
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