RegistryPermission.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で指定される操作の集合が、指定したアクセス許可に完全に含まれる場合、現在のアクセス許可オブジェクトは指定したアクセス許可オブジェクトのサブセットです。たとえば、C:\example.txt へのアクセス権を表すアクセス許可は、C:\ へのアクセス権を表す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するアクセス権を指定したアクセス許可と同じにしか表しません。

使用例

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

    Dim returnValue As Boolean = True

    Dim reg1, reg2 As String
    Dim regPerm1, regPerm2 As RegistryPermission

    Dim regGen1 As New RegGenerator()
    Dim regGen2 As New RegGenerator()

    regGen1.ResetIndex()
    While regGen1.CreateReg(regPerm1, reg1, RegistryPermissionAccess.Read)
        If regPerm1 Is Nothing Then
            GoTo ContinueWhile1
        End If
        regGen2.ResetIndex()
        Console.WriteLine("**********************************************************" & ControlChars.Lf)
        While regGen2.CreateReg(regPerm2, reg2, RegistryPermissionAccess.AllAccess)
            Dim firstPermission As String = IIf(reg1 = "" Or reg1 Is Nothing, "null", reg1)
            Dim secondPermission As String = IIf(reg2 = "" Or reg2 Is Nothing, "null", reg2)
            If regPerm2 Is Nothing Then
                GoTo ContinueWhile2
            End If
            Try
                If regPerm1.IsSubsetOf(regPerm2) Then

                    Console.WriteLine((firstPermission & ControlChars.Lf & _
                    " is a subset of " & secondPermission & ControlChars.Lf))
                Else
                    Console.WriteLine((firstPermission & ControlChars.Lf & _
                    " is not a subset of " & secondPermission & ControlChars.Lf))
                End If

            Catch e As Exception
                Console.WriteLine(IIf("An exception was thrown for subset :" & reg1 = "", "null", _
                IIf(reg1 & ControlChars.Lf & reg2 = "", "null", reg2 & ControlChars.Lf & e.ToString())))
            End Try
ContinueWhile2:
        End While
ContinueWhile1:
    End While
    Return returnValue
End Function 'IsSubsetOfDemo


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

    bool returnValue = true;

    string reg1,reg2;
    RegistryPermission regPerm1,regPerm2;

    RegGenerator regGen1 = new RegGenerator();
    RegGenerator regGen2 = new RegGenerator();

    regGen1.ResetIndex();
    while(regGen1.CreateReg(out regPerm1, out reg1, RegistryPermissionAccess.Read)) 
    {
        if(regPerm1 == null) continue;
        regGen2.ResetIndex();
        Console.WriteLine("**********************************************************\n");
        while(regGen2.CreateReg(out regPerm2, out reg2, RegistryPermissionAccess.AllAccess)) 
        {
            string firstPermission = reg1 == "" | reg1 == null ? "null" : reg1 ;
            string secondPermission = reg2 == "" | reg2 == null ? "null" : reg2;
            if(regPerm2 == null) continue;
            try
            {            
                if (regPerm1.IsSubsetOf(regPerm2))
                {
                        
                    Console.WriteLine(firstPermission +"\n is a subset of " + secondPermission + "\n");
                }
                else
                {
                    Console.WriteLine(firstPermission  +"\n is not a subset of " 
                        + secondPermission + "\n");
                }

            }
            catch(Exception e) 
            {
                Console.WriteLine("An exception was thrown for subset :" + reg1 == "" ? "null" : reg1 + "\n" + reg2 == "" ? "null" : reg2 +"\n" + e);
            }
        }
    }
    return returnValue;
}

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

    bool returnValue = true;

    String* reg1;
    String* reg2;
    RegistryPermission* regPerm1;
    RegistryPermission* regPerm2;

    RegGenerator* regGen1 = new RegGenerator();
    RegGenerator* regGen2 = new RegGenerator();

    regGen1->ResetIndex();
    while(regGen1->CreateReg(&regPerm1, &reg1, RegistryPermissionAccess::Read)) 
    {
        if(regPerm1 == 0) continue;
        regGen2->ResetIndex();
        Console::WriteLine(S"**********************************************************\n");
        while(regGen2->CreateReg(&regPerm2, &reg2, RegistryPermissionAccess::AllAccess)) 
        {
            String* firstPermission = reg1->Equals(S"") || reg1 == 0 ? S"null" : reg1 ;
            String* secondPermission = reg2->Equals(S"") || reg2 == 0 ? S"null" : reg2;
            if(regPerm2 == 0) continue;
            try
            {            
                if (regPerm1->IsSubsetOf(regPerm2))
                {

                    Console::WriteLine(S"{0}\n is a subset of {1}\n", firstPermission, secondPermission);
                }
                else
                {
                    Console::WriteLine(S"{0}\n is not a subset of {1}\n", firstPermission, secondPermission);
                }

            }
            catch(Exception* e) 
            {
                Console::WriteLine(S"An exception was thrown for subset :{0}\n{1}\n{2}", reg1->Equals(S"") ? "null" : reg1, reg2->Equals(S"") ? "null" : reg2, e);
            }
        }
    }
    return returnValue;
}

[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

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