PublisherIdentityPermission.Union メソッド

現在のアクセス許可と指定したアクセス許可の和集合を表すアクセス許可を作成します。

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

パラメータ

• target
  現在のアクセス許可と和集合を持つアクセス許可。これは、現在のアクセス許可と同じ型であることが必要です。

戻り値

現在のアクセス許可と指定したアクセス許可の和集合を表す新しいアクセス許可。

実装

IPermission.Union

例外

解説

Union を呼び出すと、現在のアクセス許可と指定したアクセス許可の両方が表す操作をすべて表すアクセス許可が作成されます。いずれかのアクセス許可を要求し、その要求が満たされた場合、両者の和集合を表すアクセス許可に対する要求も満たされます。

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

 
' Union creates a new permission that is the union of the current permission and the specified permission.
Private Function UnionDemo() As Boolean

    Dim retCode As Boolean = True

    Dim publisher1, publisher2 As [String]
    Dim pubIdPerm1, pubIdPerm2 As PublisherIdentityPermission
    Dim p3 As IPermission

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

    pubGen1.ResetIndex()
    While pubGen1.CreatePublisher(pubIdPerm1, publisher1)
        If pubIdPerm1 Is Nothing Or pubIdPerm1.Certificate Is Nothing Then
            GoTo ContinueWhile1
        End If
        pubGen2.ResetIndex()
        While pubGen2.CreatePublisher(pubIdPerm2, publisher2)
            If pubIdPerm2 Is Nothing Or pubIdPerm2.Certificate Is Nothing Then
                GoTo ContinueWhile2
            End If
            p3 = pubIdPerm1.Union(pubIdPerm2)

            If Not (p3 Is Nothing) Then
                Console.WriteLine(("The union of " & pubIdPerm1.Certificate.GetName() & " and " & pubIdPerm2.Certificate.GetName() & " = " & CType(p3, PublisherIdentityPermission).Certificate.GetName()))
            Else
                Console.WriteLine(("The union of " & pubIdPerm1.Certificate.GetName() & " and " & pubIdPerm2.Certificate.GetName() & " = null."))
            End If
ContinueWhile2:
        End While
ContinueWhile1:
    End While


    Return retCode
End Function 'UnionDemo


[C#] 
// Union creates a new permission that is the union of the current permission and the specified permission.
    private bool UnionDemo()
    {

        bool retCode = true;

        String publisher1,publisher2;
        PublisherIdentityPermission pubIdPerm1,pubIdPerm2;
        IPermission p3;

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

        pubGen1.ResetIndex();
        while(pubGen1.CreatePublisher(out pubIdPerm1, out publisher1)) 
        {
            if(pubIdPerm1 == null | pubIdPerm1.Certificate == null) continue;
            pubGen2.ResetIndex();
            while(pubGen2.CreatePublisher(out pubIdPerm2, out publisher2)) 
            {
            if(pubIdPerm2 == null | pubIdPerm2.Certificate == null) continue;
                p3 = pubIdPerm1.Union(pubIdPerm2);
                
                if(p3 != null)
                {
                    Console.WriteLine("The union of " + pubIdPerm1.Certificate.GetName() + " and " 
                        + pubIdPerm2.Certificate.GetName() + " = " 
                        + ((PublisherIdentityPermission)p3).Certificate.GetName());
                }
                else
                {
                    Console.WriteLine ("The union of " + pubIdPerm1.Certificate.GetName() + " and " 
                        + pubIdPerm2.Certificate.GetName() + " = null.");
                }

            }
        }


        return retCode;

    }

[C++] 
// Union creates a new permission that is the union of the current permission and the specified permission.
bool UnionDemo()
{

   bool retCode = true;

   String* publisher1;
   String* publisher2;

   PublisherIdentityPermission* pubIdPerm1;
   PublisherIdentityPermission* pubIdPerm2;

   IPermission* p3;

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

   pubGen1->ResetIndex();
   while(pubGen1->CreatePublisher(&pubIdPerm1, &publisher1)) 
   {
      if(pubIdPerm1 == 0 || pubIdPerm1->Certificate == 0) continue;
      pubGen2->ResetIndex();
      while(pubGen2->CreatePublisher(&pubIdPerm2, &publisher2)) 
      {
         if(pubIdPerm2 == 0 || pubIdPerm2->Certificate == 0) continue;
         p3 = pubIdPerm1->Union(pubIdPerm2);

         if(p3 != 0)
         {
            Console::WriteLine(S"The union of {0} and {1} = {2}",
               pubIdPerm1->Certificate->GetName(),
               pubIdPerm2->Certificate->GetName(),
               (dynamic_cast<PublisherIdentityPermission*>(p3))->Certificate->GetName());
         }
         else
         {
            Console::WriteLine (S"The union of {0} and {1} = null.",
               pubIdPerm1->Certificate->GetName(), pubIdPerm2->Certificate->GetName());
         }

      }
   }


   return retCode;

}

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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