ZoneIdentityPermission.Intersect メソッド
アセンブリ: mscorlib (mscorlib.dll 内)
構文
Dim instance As ZoneIdentityPermission Dim target As IPermission Dim returnValue As IPermission returnValue = instance.Intersect(target)
戻り値
現在のアクセス許可と指定したアクセス許可の積集合を表す新しいアクセス許可。積集合が空の場合、この新しいアクセス許可は null 参照 (Visual Basic では Nothing) です。
解説
2 つのアクセス許可の積集合となるアクセス許可には、両方に共通する操作の集合が記述されています。2 つのアクセス許可を要求し、その両方について要求が満たされる場合にだけ、それらの積集合を表すアクセス許可に対する要求も満たされます。
2 つの同じ ZoneIdentityPermission オブジェクトの積集合は、同じアクセス許可です。その他の組み合わせでは、アクセス許可が null 参照 (Visual Basic では Nothing) になります。
' Intersect creates and returns a new permission that is the intersection of the current ' permission and the permission specified. Private Function IntersectDemo() As Boolean Dim returnValue As Boolean = True Dim zone1, zone2 As SecurityZone Dim zoneIdPerm1, zoneIdPerm2, zoneIdPerm3 As ZoneIdentityPermission Dim zoneGen1 As New ZoneGenerator() Dim zoneGen2 As New ZoneGenerator() zoneGen1.ResetIndex() While zoneGen1.CreateZone(zone1) zoneIdPerm1 = New ZoneIdentityPermission(zone1) Console.WriteLine("**********************************************************" & ControlChars.Cr) zoneGen2.ResetIndex() While zoneGen2.CreateZone(zone2) zoneIdPerm2 = New ZoneIdentityPermission(zone2) zoneIdPerm3 = CType(zoneIdPerm1.Intersect(zoneIdPerm2), ZoneIdentityPermission) If Not (zoneIdPerm3 Is Nothing) Then Console.WriteLine(("The intersection of " & zone1.ToString() & " and " & _ zone2.ToString() & " = " & CType(zoneIdPerm3, Object).SecurityZone.ToString())) Else Console.WriteLine(("The intersection of " & zone1.ToString() & " and " & _ zone2.ToString() & " is null.")) End If ContinueWhile2: End While ContinueWhile1: End While Return returnValue End Function 'IntersectDemo
// Intersect creates and returns a new permission that is the intersection of the current // permission and the permission specified. private bool IntersectDemo() { bool returnValue = true; SecurityZone zone1, zone2; ZoneIdentityPermission zoneIdPerm1, zoneIdPerm2, zoneIdPerm3; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while (zoneGen1.CreateZone(out zone1)) { zoneIdPerm1 = new ZoneIdentityPermission( zone1); Console.WriteLine("**********************************************************\n"); zoneGen2.ResetIndex(); while (zoneGen2.CreateZone(out zone2)) { zoneIdPerm2 = new ZoneIdentityPermission( zone2); zoneIdPerm3 = (ZoneIdentityPermission)zoneIdPerm1.Intersect(zoneIdPerm2); if (zoneIdPerm3 != null) { Console.WriteLine("The intersection of " + zone1 + " and " + zone2 + " = " + ((ZoneIdentityPermission)zoneIdPerm3).SecurityZone.ToString()); } else { Console.WriteLine("The intersection of " + zone1 + " and " + zone2 + " is null."); } } } return returnValue; }
// Intersect creates and returns a new permission that is the intersection of the current // permission and the permission specified. bool IntersectDemo() { bool returnValue = true; SecurityZone zone1; SecurityZone zone2; ZoneIdentityPermission^ zoneIdPerm1; ZoneIdentityPermission^ zoneIdPerm2; ZoneIdentityPermission^ zoneIdPerm3; ZoneGenerator^ zoneGen1 = gcnew ZoneGenerator; ZoneGenerator^ zoneGen2 = gcnew ZoneGenerator; zoneGen1->ResetIndex(); while ( zoneGen1->CreateZone( &zone1 ) ) { zoneIdPerm1 = gcnew ZoneIdentityPermission( zone1 ); Console::WriteLine( "**********************************************************\n" ); zoneGen2->ResetIndex(); while ( zoneGen2->CreateZone( &zone2 ) ) { zoneIdPerm2 = gcnew ZoneIdentityPermission( zone2 ); zoneIdPerm3 = dynamic_cast<ZoneIdentityPermission^>(zoneIdPerm1->Intersect( zoneIdPerm2 )); if ( zoneIdPerm3 != nullptr ) { Console::WriteLine( "The intersection of {0} and {1} = {2}", zone1, zone2, (dynamic_cast<ZoneIdentityPermission^>(zoneIdPerm3))->SecurityZone ); } else { Console::WriteLine( "The intersection of {0} and {1} is null.", zone1, zone2 ); } } } return returnValue; }
// Intersect creates and returns a new permission that // is the intersection of the current // permission and the permission specified. private boolean IntersectDemo() { boolean returnValue = true; SecurityZone zone1[] = new SecurityZone[1]; SecurityZone zone2[] = new SecurityZone[1]; ZoneIdentityPermission zoneIdPerm1[] = new ZoneIdentityPermission[1]; ZoneIdentityPermission zoneIdPerm2[] = new ZoneIdentityPermission[1]; ZoneIdentityPermission zoneIdPerm3 = null; ZoneGenerator zoneGen1 = new ZoneGenerator(); ZoneGenerator zoneGen2 = new ZoneGenerator(); zoneGen1.ResetIndex(); while (zoneGen1.CreateZone(zoneIdPerm1, zone1)) { if (zoneIdPerm1[0] == null) { continue; } Console.WriteLine("**********************************" + "************************\n"); zoneGen2.ResetIndex(); while (zoneGen2.CreateZone(zoneIdPerm2, zone2)) { if (zoneIdPerm2[0] == null) { continue; } zoneIdPerm3 = ((ZoneIdentityPermission)(zoneIdPerm1[0]. Intersect(zoneIdPerm2[0]))); if (zoneIdPerm3 != null) { Console.WriteLine(("The intersection of " + zone1[0] + " and " + zone2[0] + " = " + ((ZoneIdentityPermission)(zoneIdPerm3)). get_SecurityZone().ToString())); } else { Console.WriteLine(("The intersection of " + zone1[0] + " and " + zone2[0] + " is null.")); } } } return returnValue; } //IntersectDemo
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
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参照
- ZoneIdentityPermission.Intersect メソッドのページへのリンク