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X509Store.Remove Method

Removes a certificate from an X.509 certificate store.

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

public:
void Remove (
	X509Certificate2^ certificate
)
public void Remove (
	X509Certificate2 certificate
)
public function Remove (
	certificate : X509Certificate2
)
Not applicable.

Parameters

certificate

The certificate to remove.

Exception typeCondition

ArgumentNullException

certificate is a null reference (Nothing in Visual Basic).

SecurityException

The caller does not have the required permission.

Use this method to remove a single certificate from an X.509 store.

The following code 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();
}


import System.*;
import System.Security.Cryptography.*;
import System.Security.Cryptography.X509Certificates.*;
import 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.get_Certificates();
        Console.WriteLine("Store name: {0}", store.get_Name());
        Console.WriteLine("Store location: {0}", store.get_Location());
        for (int iCtr = 0; iCtr < storecollection.get_Count(); iCtr++) {
            X509Certificate2 x509 = storecollection.get_Item(iCtr);
            Console.WriteLine("certificate name: {0}", x509.get_Subject());
        }
        //Remove a certificate.
        store.Remove(certificate1);
        X509Certificate2Collection storecollection2 = 
            (X509Certificate2Collection)store.get_Certificates();
        Console.WriteLine("{1}Store name: {0}", store.get_Name(),
            Environment.get_NewLine());
        for (int iCtr = 0; iCtr < storecollection2.get_Count(); iCtr++) {
            X509Certificate2 x509 = storecollection2.get_Item(iCtr);
            Console.WriteLine("certificate name: {0}", x509.get_Subject());
        }
        //Remove a range of certificates.
        store.RemoveRange(collection);
        X509Certificate2Collection storecollection3 =
            (X509Certificate2Collection)store.get_Certificates();
        Console.WriteLine("{1}Store name: {0}", store.get_Name(), 
            Environment.get_NewLine());
        if (storecollection3.get_Count() == 0) {
            Console.WriteLine("Store contains no certificates.");
        }
        else {
            for (int iCtr = 0; iCtr < storecollection3.get_Count(); iCtr++) {
                X509Certificate2 x509 = storecollection3.get_Item(iCtr);
                Console.WriteLine("certificate name: {0}", x509.get_Subject());
            }
        }
        //Close the store.
        store.Close();
    } //main
} //X509store2

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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