PublisherIdentityPermission.IsSubsetOf メソッド

現在のアクセス許可が、指定したアクセス許可のサブセットかどうかを判断します。

Overrides Public Function IsSubsetOf( _
   ByVal target As IPermission _) As Boolean Implements IPermission.IsSubsetOf
[C#]
public override bool IsSubsetOf(IPermissiontarget);
[C++]
public: bool IsSubsetOf(IPermission* target);
[JScript]
public override function IsSubsetOf(
   target : IPermission) : Boolean;

パラメータ

• target
  サブセットの関係を調べる対象のアクセス許可。このアクセス許可は、現在のアクセス許可と同じ型である必要があります。

戻り値

現在のアクセス許可が、指定したアクセス許可のサブセットである場合は true 。それ以外の場合は false 。

実装

IPermission.IsSubsetOf

例外

解説

現在のアクセス許可と指定したアクセス許可が等しい場合、現在のアクセス許可は指定したアクセス許可のサブセットです。このメソッドが true を返す場合、現在のアクセス許可は、保護されたリソースに対して、指定したアクセス許可と同じアクセス権を表します。

現在のアクセス許可が、指定したアクセス許可と等しい場合、 PublisherIdentityPermission は set 操作 (IsSubsetOf 、 Intersect 、および Union) だけをサポートします。

使用例

 
' IsSubsetOf determines whether the current permission is a subset of the specified permission.
Private Function IsSubsetOfDemo() As Boolean

    Dim retCode As Boolean = True

    Dim publisher1, publisher2 As [String]
    Dim pubIdPerm1, pubIdPerm2 As PublisherIdentityPermission

    Dim pubGen1 As New PublisherGenerator()
    Dim pubGen2 As New PublisherGenerator()

    pubGen1.ResetIndex()
    While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
        If pubIdPerm1 Is Nothing Then
            GoTo ContinueWhile1
        End If
        pubGen2.ResetIndex()
        While pubGen2.CreatePublisher(pubIdPerm2, publisher2)
            If pubIdPerm2 Is Nothing Then
                GoTo ContinueWhile2
            End If
            Try
                ' Check for whether either of the publishers is null.
                ' An exception will be thrown if either is null.
                If publisher1 <> "null" AndAlso publisher2 <> "null" Then
                    If pubIdPerm1.IsSubsetOf(pubIdPerm2) Then
                        Console.WriteLine((pubIdPerm1.Certificate.GetName() & " is a subset of " & pubIdPerm2.Certificate.GetName() & ControlChars.Lf))
                    Else
                        Console.WriteLine((pubIdPerm1.Certificate.GetName() & " is not a subset of " & pubIdPerm2.Certificate.GetName() & ControlChars.Lf))
                    End If
                End If

            Catch
                Console.WriteLine(("An exception was thrown for " & publisher1 & " is a subset of " & publisher2 & ControlChars.Lf & "."))
                retCode = False
            End Try
ContinueWhile2:
        End While
ContinueWhile1:
    End While


    Return retCode
End Function 'IsSubsetOfDemo


[C#] 
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
    private bool IsSubsetOfDemo()
    {

        bool retCode = true;

        String publisher1,publisher2;
        PublisherIdentityPermission pubIdPerm1,pubIdPerm2;

        PublisherGenerator pubGen1 = new PublisherGenerator();
        PublisherGenerator pubGen2 = new PublisherGenerator();

        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(out pubIdPerm1, out publisher1)) 
        {
            if(pubIdPerm1 == null) continue;
            pubGen2.ResetIndex();
            while(pubGen2.CreatePublisher(out pubIdPerm2, out publisher2)) 
            {
                if(pubIdPerm2 == null) continue;

                try
                {
                    // Check for whether either of the publishers is null.
                    // An exception will be thrown if either is null.
                    if (publisher1 != "null" && publisher2 != "null")  
                    {
                        if (pubIdPerm1.IsSubsetOf(pubIdPerm2))
                        {
                            Console.WriteLine(pubIdPerm1.Certificate.GetName() + 
                                " is a subset of " + pubIdPerm2.Certificate.GetName() + "\n");
                        }
                        else
                        {
                            Console.WriteLine(pubIdPerm1.Certificate.GetName()  + 
                                    " is not a subset of " + pubIdPerm2.Certificate.GetName() + "\n");
                        }
                    }

                }
                catch 
                {
                    Console.WriteLine("An exception was thrown for " + publisher1 + " is a subset of "  + 
                        publisher2 +"\n." );
                    retCode=false;
                }

            }
        }


        return retCode;
    }

[C++] 
// IsSubsetOf determines whether the current permission is a subset of the specified permission.
bool IsSubsetOfDemo()
{

   bool retCode = true;

   String* publisher1;
   String* publisher2;

   PublisherIdentityPermission* pubIdPerm1;
   PublisherIdentityPermission* pubIdPerm2;


   PublisherGenerator* pubGen1 = new PublisherGenerator();
   PublisherGenerator* pubGen2 = new PublisherGenerator();

   pubGen1->ResetIndex();
   while(pubGen1->CreatePublisher(&pubIdPerm1, &publisher1)) 
   {
      if(pubIdPerm1 == 0) continue;
      pubGen2->ResetIndex();
      while(pubGen2->CreatePublisher(&pubIdPerm2, &publisher2)) 
      {
         if(pubIdPerm2 == 0) continue;

         try
         {
            // Check for whether either of the publishers is null.
            // An exception will be thrown if either is null.
            if (!publisher1->Equals(S"null") && !publisher2->Equals(S"null"))
            {
               if (pubIdPerm1->IsSubsetOf(pubIdPerm2))
               {
                  Console::WriteLine(S"{0} is a subset of {1}\n",
                     pubIdPerm1->Certificate->GetName(), pubIdPerm2->Certificate->GetName());
               }
               else
               {
                  Console::WriteLine(S"{0} is not a subset of {1}\n",
                     pubIdPerm1->Certificate->GetName(), pubIdPerm2->Certificate->GetName());
               }
            }

         }
         catch (Exception*)
         {
            Console::WriteLine(S"An exception was thrown for {0} is a subset of {1}\n.",
               publisher1, publisher2 );
            retCode=false;
         }

      }
   }


   return retCode;
}

[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン をクリックします。

必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

参照

PublisherIdentityPermission クラス | PublisherIdentityPermission メンバ | System.Security.Permissions 名前空間