DnsPermission.IsSubsetOf メソッド
アセンブリ: System (system.dll 内)
構文
Dim instance As DnsPermission Dim target As IPermission Dim returnValue As Boolean returnValue = instance.IsSubsetOf(target)
戻り値
現在のインスタンスが無制限で、target が null 参照 (Visual Basic では Nothing) または無制限のいずれかの場合は false。それ以外の場合は true。
解説
現在の DnsPermission インスタンスで指定される操作の集合が、指定した DnsPermission インスタンスに完全に含まれる場合、現在の DnsPermission インスタンスは指定した DnsPermission インスタンスのサブセットです。
IsSubsetOf メソッドが true を返す場合、現在の DnsPermission インスタンスは、指定した DnsPermission インスタンスが DNS サーバーに対して持っているアクセス権限よりも低いアクセス権限しか許可しません。
IsSubsetOf メソッドを使用して、現在のアクセス許可インスタンスが指定したアクセス許可インスタンスのサブセットかどうかを判断する例を次に示します。
Public Sub useDns() ' Create a DnsPermission instance. permission = New DnsPermission(PermissionState.Unrestricted) Dim dnsPermission1 As New DnsPermission(PermissionState.None) ' Check for permission. permission.Demand() dnsPermission1.Demand() ' Print the attributes and values. Console.WriteLine("Attributes and Values of 'DnsPermission' instance :") PrintKeysAndValues(permission.ToXml().Attributes) Console.WriteLine("Attributes and Values of specified 'DnsPermission' instance :") PrintKeysAndValues(dnsPermission1.ToXml().Attributes) Subset(dnsPermission1) End Sub 'useDns Private Sub Subset(Permission1 As DnsPermission) If permission.IsSubsetOf(Permission1) Then Console.WriteLine("Current 'DnsPermission' instance is a subset of specified 'DnsPermission' instance.") Else Console.WriteLine("Current 'DnsPermission' instance is not a subset of specified 'DnsPermission' instance.") End If End Sub 'Subset Private Sub PrintKeysAndValues(myList As Hashtable) ' Get the enumerator that can iterate through the hash table. Dim myEnumerator As IDictionaryEnumerator = myList.GetEnumerator() Console.WriteLine(ControlChars.Tab + "-KEY-" + ControlChars.Tab + "-VALUE-") While myEnumerator.MoveNext() Console.WriteLine(ControlChars.Tab + "{0}:" + ControlChars.Tab + "{1}", myEnumerator.Key, myEnumerator.Value) End While Console.WriteLine() End Sub 'PrintKeysAndValues
public void useDns() { // Create a DnsPermission instance. permission = new DnsPermission(PermissionState.Unrestricted); DnsPermission dnsPermission1 = new DnsPermission(PermissionState.None); // Check for permission. permission.Demand(); dnsPermission1.Demand(); // Print the attributes and values. Console.WriteLine("Attributes and Values of 'DnsPermission' instance :"); PrintKeysAndValues(permission.ToXml().Attributes); Console.WriteLine("Attributes and Values of specified 'DnsPermission' instance :"); PrintKeysAndValues(dnsPermission1.ToXml().Attributes); Subset(dnsPermission1); } private void Subset(DnsPermission Permission1) { if(permission.IsSubsetOf(Permission1)) Console.WriteLine("Current 'DnsPermission' instance is a subset of specified 'DnsPermission' instance."); else Console.WriteLine("Current 'DnsPermission' instance is not a subset of specified 'DnsPermission' instance."); } private void PrintKeysAndValues(Hashtable myList) { // Get the enumerator that can iterate through the hash table. IDictionaryEnumerator myEnumerator = myList.GetEnumerator(); Console.WriteLine("\t-KEY-\t-VALUE-"); while (myEnumerator.MoveNext()) Console.WriteLine("\t{0}:\t{1}", myEnumerator.Key, myEnumerator.Value); Console.WriteLine(); }
public: void useDns() { // Create a DnsPermission instance. permission = gcnew DnsPermission( PermissionState::Unrestricted ); DnsPermission^ dnsPermission1 = gcnew DnsPermission( PermissionState::None ); // Check for permission. permission->Demand(); dnsPermission1->Demand(); // Print the attributes and values. Console::WriteLine( "Attributes and Values of 'DnsPermission' instance :" ); PrintKeysAndValues( permission->ToXml()->Attributes ); Console::WriteLine( "Attributes and Values of specified 'DnsPermission' instance :" ); PrintKeysAndValues( dnsPermission1->ToXml()->Attributes ); Subset( dnsPermission1 ); } private: void Subset( DnsPermission^ Permission1 ) { if ( permission->IsSubsetOf( Permission1 ) ) { Console::WriteLine( "Current 'DnsPermission' instance is a subset of specified 'DnsPermission' instance." ); } else { Console::WriteLine( "Current 'DnsPermission' instance is not a subset of specified 'DnsPermission' instance." ); } } void PrintKeysAndValues( Hashtable^ myList ) { // Get the enumerator that can iterate through the hash table. IDictionaryEnumerator^ myEnumerator = myList->GetEnumerator(); Console::WriteLine( "\t-KEY-\t-VALUE-" ); while ( myEnumerator->MoveNext() ) { Console::WriteLine( "\t {0}:\t {1}", myEnumerator->Key, myEnumerator->Value ); } Console::WriteLine(); }
public void UseDns() { // Create a DnsPermission instance. permission = new DnsPermission(PermissionState.Unrestricted); DnsPermission dnsPermission1 = new DnsPermission(PermissionState.None); // Check for permission. permission.Demand(); dnsPermission1.Demand(); // Print the attributes and values. Console.WriteLine("Attributes and Values of 'DnsPermission' " + "instance :"); PrintKeysAndValues(permission.ToXml().get_Attributes()); Console.WriteLine("Attributes and Values of specified " + "'DnsPermission' instance :"); PrintKeysAndValues(dnsPermission1.ToXml().get_Attributes()); Subset(dnsPermission1); } //UseDns private void Subset(DnsPermission Permission1) { if (permission.IsSubsetOf(Permission1)) { Console.WriteLine("Current 'DnsPermission' instance is a " + "subset of specified 'DnsPermission' instance."); } else { Console.WriteLine("Current 'DnsPermission' instance is " + "not a subset of specified 'DnsPermission' instance."); } } //Subset private void PrintKeysAndValues(Hashtable myList) { // Get the enumerator that can iterate through the hash table. IDictionaryEnumerator myEnumerator = myList.GetEnumerator(); Console.WriteLine("\t-KEY-\t-VALUE-"); while (myEnumerator.MoveNext()) { Console.WriteLine("\t{0}:\t{1}", myEnumerator.get_Key(), myEnumerator.get_Value()); } Console.WriteLine(); } //PrintKeysAndValues
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
- DnsPermission.IsSubsetOf メソッドのページへのリンク