X500DistinguishedName.Decode メソッド

.NET Framework クラス ライブラリ リファレンス

X500DistinguishedName.Decode メソッド

メモ : このメソッドは、.NET Framework version 2.0 で新しく追加されたものです。

flag パラメータで指定された特性を使用して識別名をデコードします。

名前空間: System.Security.Cryptography.X509Certificates
アセンブリ: System (system.dll 内)
構文

Visual Basic (宣言)

Public Function Decode ( _
    flag As X500DistinguishedNameFlags _
) As String

Visual Basic (使用法)

Dim instance As X500DistinguishedName
Dim flag As X500DistinguishedNameFlags
Dim returnValue As String

returnValue = instance.Decode(flag)

C#

public string Decode (
    X500DistinguishedNameFlags flag
)

C++

public:
String^ Decode (
    X500DistinguishedNameFlags flag
)

J#

public String Decode (
    X500DistinguishedNameFlags flag
)

JScript

public function Decode (
    flag : X500DistinguishedNameFlags
) : String

パラメータ

flag

X500DistinguishedName オブジェクトの特性を指定するフラグ。

戻り値
デコードされた識別名。

解説

このメソッドでは、ASN でエンコードされた識別名が、文字列値にデコードされます。

使用例

X500DistinguishedName クラスを使用するコード例を次に示します。

Visual Basic

Imports System
Imports System.Security.Cryptography
Imports System.Security.Permissions
Imports System.IO
Imports System.Security.Cryptography.X509Certificates



Class X500Sample
   Shared msg As String
   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)
     msg = "Number of certificates: " & scollection.Count
 & Environment.NewLine
     MsgBox(msg)
         Dim x509 As X509Certificate2
         For Each x509 In
  scollection
            Dim dname As New
 X500DistinguishedName(x509.SubjectName)
        msg = "X500DistinguishedName: " & dname.Name
 & Environment.NewLine
     MsgBox(msg)
            x509.Reset()
         Next x509
         store.Close()
     Catch e As Exception
            msg = "Error: Information could not be written out
 for this certificate."
            MsgBox(msg)
      End Try
   End Sub 'Main 
End Class 'X500Sample

C#

using System;
using System.Security.Cryptography;
using System.Security.Permissions;
using System.IO;
using System.Security.Cryptography.X509Certificates;

class X500Sample
{
    static void Main()
    {
        try
        {
            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);
            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}", scollection.Count,
 Environment.NewLine);
            foreach (X509Certificate2 x509 in
 scollection)
            {
                X500DistinguishedName dname = new X500DistinguishedName(x509.SubjectName);
                Console.WriteLine("X500DistinguishedName: {0}{1}", dname.Name,
 Environment.NewLine);
                x509.Reset();
            }
            store.Close();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for
 this certificate.");
        }

    }
}

C++

#using <System.dll>
#using <system.security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Permissions;
using namespace System::IO;
using namespace System::Security::Cryptography::X509Certificates;
int main()
{
   try
   {
      X509Store ^ store = gcnew X509Store( "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 ));
      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}", scollection->Count,
 Environment::NewLine );
      System::Collections::IEnumerator^ myEnum = scollection->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         X509Certificate2 ^ x509 = safe_cast<X509Certificate2 ^>(myEnum->Current);
         X500DistinguishedName ^ dname = gcnew X500DistinguishedName( x509->SubjectName
 );
         Console::WriteLine( "X500DistinguishedName: {0}{1}", dname->Name,
 Environment::NewLine );
         x509->Reset();
      }
      store->Close();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( "Information could not be written out for
 this certificate." );
   }

}

プラットフォーム

Windows 98, Windows 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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
X500DistinguishedName クラス
X500DistinguishedName メンバ
System.Security.Cryptography.X509Certificates 名前空間