X509Certificate2Collection Class
.NET Framework 3.0
Represents a collection of X509Certificate2 objects. This class cannot be inherited.
Namespace: System.Security.Cryptography.X509Certificates
Assembly: System (in system.dll)
Assembly: System (in system.dll)
'Declaration Public Class X509Certificate2Collection Inherits X509CertificateCollection 'Usage Dim instance As X509Certificate2Collection
public class X509Certificate2Collection extends X509CertificateCollection
public class X509Certificate2Collection extends X509CertificateCollection
Not applicable.
The following code example opens the current user's personal certificate store, selects only valid certificates, allows the user to select a certificate, and then writes certificate and certificate chain information to the console. The output depends on the certificate the user selects.
Imports System Imports System.Security.Cryptography Imports System.Security.Permissions Imports System.IO Imports System.Security.Cryptography.X509Certificates Class CertSelect Shared Sub Main() Try Dim store As New X509Store("MY", StoreLocation.CurrentUser) store.Open(OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly) Dim collection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection) Dim fcollection As X509Certificate2Collection = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False), X509Certificate2Collection) Dim scollection As X509Certificate2Collection = X509Certificate2UI.SelectFromCollection(fcollection, "Test Certificate Select", "Select a certificate from the following list to get information on that certificate", X509SelectionFlag.MultiSelection) Console.WriteLine("Number of certificates: {0}{1}", scollection.Count, Environment.NewLine) Dim x509 As X509Certificate2 For Each x509 In scollection Dim rawdata As Byte() = x509.RawData Console.WriteLine("Content Type: {0}{1}", X509Certificate2.GetCertContentType(rawdata), Environment.NewLine) Console.WriteLine("Friendly Name: {0}{1}", x509.FriendlyName, Environment.NewLine) Console.WriteLine("Certificate Verified?: {0}{1}", x509.Verify(), Environment.NewLine) Console.WriteLine("Simple Name: {0}{1}", x509.GetNameInfo(X509NameType.SimpleName, True), Environment.NewLine) Console.WriteLine("Signature Algorithm: {0}{1}", x509.SignatureAlgorithm.FriendlyName, Environment.NewLine) Console.WriteLine("Private Key: {0}{1}", x509.PrivateKey.ToXmlString(False), Environment.NewLine) Console.WriteLine("Public Key: {0}{1}", x509.PublicKey.Key.ToXmlString(False), Environment.NewLine) Console.WriteLine("Certificate Archived?: {0}{1}", x509.Archived, Environment.NewLine) Console.WriteLine("Length of Raw Data: {0}{1}", x509.RawData.Length, Environment.NewLine) X509Certificate2UI.DisplayCertificate(x509) x509.Reset() Next x509 store.Close() Catch cExcept As CryptographicException Console.WriteLine("Information could not be written out for this certificate.") End Try End Sub End Class
import System.*;
import System.Security.Cryptography.*;
import System.Security.Permissions.*;
import System.IO.*;
import System.Security.Cryptography.X509Certificates.*;
public class CertSelect
{
/** @attribute SecurityPermission(SecurityAction.LinkDemand,
Unrestricted = true) */
public static void main(String[] args)
{
try {
X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
X509Certificate2Collection collection =
(X509Certificate2Collection)store.get_Certificates();
X509Certificate2Collection fCollection =
(X509Certificate2Collection)collection.Find(
X509FindType.FindByTimeValid, DateTime.get_Now(), false);
X509Certificate2Collection sCollection = X509Certificate2UI.SelectFromCollection(fCollection, "Test Certificate Select","Select a certificate from the following list to get information on that certificate",X509SelectionFlag.MultiSelection);
Console.WriteLine("Number of certificates: {0}{1}",
(Int32)sCollection.get_Count(), Environment.get_NewLine());
for (int iCtr = 0; iCtr < sCollection.get_Count(); iCtr++) {
X509Certificate2 x509 =
(X509Certificate2)(sCollection.get_Item(iCtr));
ubyte rawData[] = x509.get_RawData();
Console.WriteLine("Content Type: {0}{1}",
X509Certificate2.GetCertContentType(rawData),
Environment.get_NewLine());
Console.WriteLine("Friendly Name: {0}{1}",
x509.get_FriendlyName(), Environment.get_NewLine());
Console.WriteLine("Certificate Verified?: {0}{1}",
(System.Boolean)x509.Verify(), Environment.get_NewLine());
Console.WriteLine("Simple Name: {0}{1}",
x509.GetNameInfo(X509NameType.SimpleName, true),
Environment.get_NewLine());
Console.WriteLine("Signature Algorithm: {0}{1}",
x509.get_SignatureAlgorithm().get_FriendlyName(),
Environment.get_NewLine());
Console.WriteLine("Private Key: {0}{1}",
x509.get_PrivateKey().ToXmlString(false),
Environment.get_NewLine());
Console.WriteLine("Public Key: {0}{1}",
x509.get_PublicKey().get_Key().ToXmlString(false),
Environment.get_NewLine());
Console.WriteLine("Certificate Archived?: {0}{1}",
(System.Boolean)x509.get_Archived(),
Environment.get_NewLine());
Console.WriteLine("Length of Raw Data: {0}{1}",
(Int32)x509.get_RawData().length,
Environment.get_NewLine());
X509Certificate2UI.DisplayCertificate(x509);
x509.Reset();
}
store.Close();
}
catch (CryptographicException exp) {
Console.WriteLine("Information could not be written out for this "
+ "certificate.");
}
} //main
} //CertSelect
System.Object
System.Collections.CollectionBase
System.Security.Cryptography.X509Certificates.X509CertificateCollection
System.Security.Cryptography.X509Certificates.X509Certificate2Collection
System.Collections.CollectionBase
System.Security.Cryptography.X509Certificates.X509CertificateCollection
System.Security.Cryptography.X509Certificates.X509Certificate2Collection
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.Community Additions
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