AsnEncodedDataCollection Klasse
Definition
Wichtig
Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.
Stellt eine Auflistung von AsnEncodedData-Objekten dar. Diese Klasse kann nicht vererbt werden.
public ref class AsnEncodedDataCollection sealed : System::Collections::ICollection
public sealed class AsnEncodedDataCollection : System.Collections.ICollection
type AsnEncodedDataCollection = class
interface ICollection
interface IEnumerable
Public NotInheritable Class AsnEncodedDataCollection
Implements ICollection
- Vererbung
-
AsnEncodedDataCollection
- Implementiert
Beispiele
Im folgenden Codebeispiel wird die Verwendung der AsnEncodedDataCollection-Klasse veranschaulicht.
#using <System.dll>
#using <System.Security.dll>
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;
int main()
{
//The following example demonstrates the usage of the AsnEncodedData classes.
// Asn encoded data is read from the extensions of an X509 certificate.
try
{
// Open the certificate store.
X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser );
store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly) );
X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
X509Certificate2Collection^ fcollection = dynamic_cast<X509Certificate2Collection^>(collection->Find( X509FindType::FindByTimeValid, DateTime::Now, false ));
// Select one or more certificates to display extensions information.
X509Certificate2Collection^ scollection = X509Certificate2UI::SelectFromCollection(fcollection, L"Certificate Select",L"Select certificates from the following list to get extension information on that certificate",X509SelectionFlag::MultiSelection);
// Create a new AsnEncodedDataCollection object.
AsnEncodedDataCollection^ asncoll = gcnew AsnEncodedDataCollection;
for ( int i = 0; i < scollection->Count; i++ )
{
// Display certificate information.
Console::ForegroundColor = ConsoleColor::Red;
Console::WriteLine( L"Certificate name: {0}", scollection[i]->GetName() );
Console::ResetColor();
// Display extensions information.
System::Collections::IEnumerator^ myEnum = scollection[i]->Extensions->GetEnumerator();
while ( myEnum->MoveNext() )
{
X509Extension^ extension = safe_cast<X509Extension ^>(myEnum->Current);
// Create an AsnEncodedData object using the extensions information.
AsnEncodedData^ asndata = gcnew AsnEncodedData( extension->Oid,extension->RawData );
Console::ForegroundColor = ConsoleColor::Green;
Console::WriteLine( L"Extension type: {0}", extension->Oid->FriendlyName );
Console::WriteLine( L"Oid value: {0}", asndata->Oid->Value );
Console::WriteLine( L"Raw data length: {0} {1}", asndata->RawData->Length, Environment::NewLine );
Console::ResetColor();
Console::WriteLine( asndata->Format(true) );
Console::WriteLine( Environment::NewLine );
// Add the AsnEncodedData object to the AsnEncodedDataCollection object.
asncoll->Add( asndata );
}
Console::WriteLine( Environment::NewLine );
}
Console::ForegroundColor = ConsoleColor::Red;
Console::WriteLine( L"Number of AsnEncodedData items in the collection: {0} {1}", asncoll->Count, Environment::NewLine );
Console::ResetColor();
store->Close();
//Create an enumerator for moving through the collection.
AsnEncodedDataEnumerator^ asne = asncoll->GetEnumerator();
//You must execute a MoveNext() to get to the first item in the collection.
asne->MoveNext();
// Write out AsnEncodedData in the collection.
Console::ForegroundColor = ConsoleColor::Blue;
Console::WriteLine( L"First AsnEncodedData in the collection: {0}", asne->Current->Format(true) );
Console::ResetColor();
asne->MoveNext();
Console::ForegroundColor = ConsoleColor::DarkBlue;
Console::WriteLine( L"Second AsnEncodedData in the collection: {0}", asne->Current->Format(true) );
Console::ResetColor();
//Return index in the collection to the beginning.
asne->Reset();
}
catch ( CryptographicException^ )
{
Console::WriteLine( L"Information could not be written out for this certificate." );
}
return 1;
}
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
class AsnEncodedDataSample
{
static void Main()
{
//The following example demonstrates the usage the AsnEncodedData classes.
// Asn encoded data is read from the extensions of an X509 certificate.
try
{
// Open the certificate store.
X509Store store = new X509Store("MY", StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid, DateTime.Now, false);
// Select one or more certificates to display extensions information.
X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection);
// Create a new AsnEncodedDataCollection object.
AsnEncodedDataCollection asncoll = new AsnEncodedDataCollection();
for (int i = 0; i < scollection.Count; i++)
{
// Display certificate information.
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Certificate name: {0}", scollection[i].GetName());
Console.ResetColor();
// Display extensions information.
foreach (X509Extension extension in scollection[i].Extensions)
{
// Create an AsnEncodedData object using the extensions information.
AsnEncodedData asndata = new AsnEncodedData(extension.Oid, extension.RawData);
Console.ForegroundColor = ConsoleColor.Green;
Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length, Environment.NewLine);
Console.ResetColor();
Console.WriteLine(asndata.Format(true));
Console.WriteLine(Environment.NewLine);
// Add the AsnEncodedData object to the AsnEncodedDataCollection object.
asncoll.Add(asndata);
}
Console.WriteLine(Environment.NewLine);
}
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("Number of AsnEncodedData items in the collection: {0} {1}", asncoll.Count, Environment.NewLine);
Console.ResetColor();
store.Close();
//Create an enumerator for moving through the collection.
AsnEncodedDataEnumerator asne = asncoll.GetEnumerator();
//You must execute a MoveNext() to get to the first item in the collection.
asne.MoveNext();
// Write out AsnEncodedData in the collection.
Console.ForegroundColor = ConsoleColor.Blue;
Console.WriteLine("First AsnEncodedData in the collection: {0}", asne.Current.Format(true));
Console.ResetColor();
asne.MoveNext();
Console.ForegroundColor = ConsoleColor.DarkBlue;
Console.WriteLine("Second AsnEncodedData in the collection: {0}", asne.Current.Format(true));
Console.ResetColor();
//Return index in the collection to the beginning.
asne.Reset();
}
catch (CryptographicException)
{
Console.WriteLine("Information could not be written out for this certificate.");
}
}
}
Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates
Class AsnEncodedDataSample
Shared msg As String
Shared Sub Main()
'The following example demonstrates the usage the AsnEncodedData classes.
' Asn encoded data is read from the extensions of an X509 certificate.
Try
' Open the certificate store.
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)
' Select one or more certificates to display extensions information.
Dim scollection As X509Certificate2Collection = X509Certificate2UI.SelectFromCollection(fcollection, "Certificate Select", "Select certificates from the following list to get extension information on that certificate", X509SelectionFlag.MultiSelection)
' Create a new AsnEncodedDataCollection object.
Dim asncoll As New AsnEncodedDataCollection()
Dim i As Integer
For i = 0 To scollection.Count - 1
' Display certificate information.
msg = "Certificate name: "& scollection(i).GetName()
MsgBox(msg)
' Display extensions information.
Dim extension As X509Extension
For Each extension In scollection(i).Extensions
' Create an AsnEncodedData object using the extensions information.
Dim asndata As New AsnEncodedData(extension.Oid, extension.RawData)
msg = "Extension type: " & extension.Oid.FriendlyName & Environment.NewLine & "Oid value: " & asndata.Oid.Value _
& Environment.NewLine & "Raw data length: " & asndata.RawData.Length & Environment.NewLine _
& asndata.Format(True) & Environment.NewLine
MsgBox(msg)
' Add the AsnEncodedData object to the AsnEncodedDataCollection object.
asncoll.Add(asndata)
Next extension
Next i
msg = "Number of AsnEncodedData items in the collection: " & asncoll.Count
MsgBox(msg)
store.Close()
'Create an enumerator for moving through the collection.
Dim asne As AsnEncodedDataEnumerator = asncoll.GetEnumerator()
'You must execute a MoveNext() to get to the first item in the collection.
asne.MoveNext()
' Write out AsnEncodedData in the collection.
msg = "First AsnEncodedData in the collection: " & asne.Current.Format(True)
MsgBox(msg)
asne.MoveNext()
msg = "Second AsnEncodedData in the collection: " & asne.Current.Format(True)
MsgBox(msg)
'Return index in the collection to the beginning.
asne.Reset()
Catch
MsgBox("Information could not be written out for this certificate.")
End Try
End Sub
End Class
Hinweise
Diese Klasse implementiert die ICollection-Schnittstelle.
Konstruktoren
AsnEncodedDataCollection() |
Initialisiert eine neue Instanz der AsnEncodedDataCollection-Klasse. |
AsnEncodedDataCollection(AsnEncodedData) |
Initialisiert eine neue Instanz der AsnEncodedDataCollection-Klasse und fügt der Auflistung ein AsnEncodedData-Objekt hinzu. |
Eigenschaften
Count |
Ruft die Anzahl der AsnEncodedData-Objekte in einer Auflistung ab. |
IsSynchronized |
Ruft einen Wert ab, der angibt, ob der Zugriff auf das AsnEncodedDataCollection-Objekt threadsicher ist. |
Item[Int32] |
Ruft ein AsnEncodedData-Objekt aus dem AsnEncodedDataCollection-Objekt ab. |
SyncRoot |
Ruft ein Objekt ab, mit dem der Zugriff auf das AsnEncodedDataCollection-Objekt synchronisiert werden kann. |
Methoden
Add(AsnEncodedData) |
Fügt dem AsnEncodedData-Objekt ein AsnEncodedDataCollection-Objekt hinzu. |
CopyTo(AsnEncodedData[], Int32) |
Kopiert das AsnEncodedDataCollection-Objekt in ein Array. |
Equals(Object) |
Bestimmt, ob das angegebene Objekt gleich dem aktuellen Objekt ist. (Geerbt von Object) |
GetEnumerator() |
Gibt ein AsnEncodedDataEnumerator-Objekt zurück, das dazu verwendet werden kann, im AsnEncodedDataCollection-Objekt zu navigieren. |
GetHashCode() |
Fungiert als Standardhashfunktion. (Geerbt von Object) |
GetType() |
Ruft den Type der aktuellen Instanz ab. (Geerbt von Object) |
MemberwiseClone() |
Erstellt eine flache Kopie des aktuellen Object. (Geerbt von Object) |
Remove(AsnEncodedData) |
Entfernt ein AsnEncodedData-Objekt aus der AsnEncodedDataCollection. |
ToString() |
Gibt eine Zeichenfolge zurück, die das aktuelle Objekt darstellt. (Geerbt von Object) |
Explizite Schnittstellenimplementierungen
ICollection.CopyTo(Array, Int32) |
Kopiert das AsnEncodedDataCollection-Objekt in ein Array. |
ICollection.IsSynchronized |
Ruft einen Wert ab, der angibt, ob der Zugriff auf die ICollection synchronisiert (threadsicher) ist. |
ICollection.SyncRoot |
Ruft ein Objekt ab, mit dem der Zugriff auf ICollection synchronisiert werden kann. |
IEnumerable.GetEnumerator() |
Gibt ein AsnEncodedDataEnumerator-Objekt zurück, das dazu verwendet werden kann, im AsnEncodedDataCollection-Objekt zu navigieren. |
Erweiterungsmethoden
Cast<TResult>(IEnumerable) |
Wandelt die Elemente eines IEnumerable in den angegebenen Typ um |
OfType<TResult>(IEnumerable) |
Filtert die Elemente eines IEnumerable anhand eines angegebenen Typs |
AsParallel(IEnumerable) |
Ermöglicht die Parallelisierung einer Abfrage. |
AsQueryable(IEnumerable) |
Konvertiert einen IEnumerable in einen IQueryable. |