PublisherIdentityPermission.IsSubsetOf メソッドとは? わかりやすく解説

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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サブセットかどうか判断します

名前空間: System.Security.Permissions
アセンブリ: mscorlib (mscorlib.dll 内)
構文構文

Public Overrides Function
 IsSubsetOf ( _
    target As IPermission _
) As Boolean
Dim instance As PublisherIdentityPermission
Dim target As IPermission
Dim returnValue As Boolean

returnValue = instance.IsSubsetOf(target)
public override bool IsSubsetOf (
    IPermission target
)
public:
virtual bool IsSubsetOf (
    IPermission^ target
) override
public boolean IsSubsetOf (
    IPermission target
)
public override function IsSubsetOf (
    target : IPermission
) : boolean

パラメータ

target

サブセットの関係を調べ対象アクセス許可。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サブセットである場合trueそれ以外場合false

例外例外
例外種類条件

ArgumentException

target パラメータnull 参照 (Visual Basic では Nothing) ではなく現在のアクセス許可と同じ型でもありません。

解説解説
使用例使用例

次に示すのは、IsSubsetOf メソッド使用した場合結果を示す例です (メソッド使用方法を示すものではありません)。ここに示すコードは、より長いコード一部です。よりよく理解するためには、コード全体記述して実行し、その出力確認することをお勧めます。完全なコードについては、PublisherIdentityPermission クラス参照してください

    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

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;
}
bool IsSubsetOfDemo()
{
   bool retCode = true;
   String^ publisher1;
   String^ publisher2;
   PublisherIdentityPermission^ pubIdPerm1;
   PublisherIdentityPermission^ pubIdPerm2;
   PublisherGenerator^ pubGen1 = gcnew PublisherGenerator;
   PublisherGenerator^ pubGen2 = gcnew PublisherGenerator;
   pubGen1->ResetIndex();
   while ( pubGen1->CreatePublisher(  &pubIdPerm1,  &publisher1
 ) )
   {
      if ( pubIdPerm1 == nullptr )
            continue;

      pubGen2->ResetIndex();
      while ( pubGen2->CreatePublisher(  &pubIdPerm2, 
 &publisher2 ) )
      {
         if ( pubIdPerm2 == nullptr )
                  continue;
         try
         {
            
            // Check for whether either of the publishers is null.
            // An exception will be thrown if either is null.
            if (  !publisher1->Equals( "null"
 ) &&  !publisher2->Equals( "null" ) )
            {
               if ( pubIdPerm1->IsSubsetOf( pubIdPerm2 ) )
               {
                  Console::WriteLine( "{0} is a subset of {1}\n", pubIdPerm1->Certificate->GetName(),
 pubIdPerm2->Certificate->GetName() );
               }
               else
               {
                  Console::WriteLine( "{0} is not a subset of {1}\n", pubIdPerm1->Certificate->GetName(),
 pubIdPerm2->Certificate->GetName() );
               }
            }
         }
         catch ( Exception^ ) 
         {
            Console::WriteLine( "An exception was thrown for
 {0} is a subset of {1}\n.", publisher1, publisher2 );
            retCode = false;
         }

      }
   }

   return retCode;
}


private boolean IsSubsetOfDemo() 
{
    boolean retCode = true;
    String publisher1 = null;
    String publisher2 = null;
    PublisherIdentityPermission pubIdPerm1 = null; 
    PublisherIdentityPermission pubIdPerm2 = null;
    
    PublisherGenerator pubGen1 =  new PublisherGenerator();
    PublisherGenerator pubGen2 =  new PublisherGenerator();
    
    pubGen1.ResetIndex();
    while(pubGen1.CreatePublisher(pubIdPerm1, publisher1)) {
        if (pubIdPerm1 == null) {
            continue ;
        }
        pubGen2.ResetIndex();
        while(pubGen2.CreatePublisher(pubIdPerm2, 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.get_Certificate().
                        GetName() + " is a subset of " 
                            + pubIdPerm2.get_Certificate().GetName() 
                            + "\n"));
                    }
                    else {
                        Console.WriteLine((pubIdPerm1.get_Certificate().
                        GetName() + " is not a subset of " 
                            + pubIdPerm2.get_Certificate().GetName() 
                            + "\n"));
                    }
                }
            }
            catch(System.Exception exp){
                    Console.WriteLine(("An exception was thrown for
 " 
                        + publisher1 + " is a subset of " + publisher2
 
                        + "\n."));
                    retCode = false;
            }
        }
    }
    return retCode ;
} //IsSubsetOfDemo   
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参照参照
関連項目
PublisherIdentityPermission クラス
PublisherIdentityPermission メンバ
System.Security.Permissions 名前空間



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