RegistryPermission.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 other As IPermission _) As IPermission Implements IPermission.Union
[C#]
public override IPermission Union(IPermissionother);
[C++]
public: IPermission* Union(IPermission* other);
[JScript]
public override function Union(
   other : IPermission) : IPermission;

パラメータ

• other
  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。

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 returnValue As Boolean = True

    Dim reg1, reg2 As String
    Dim regPerm1, regPerm2 As RegistryPermission
    Dim regIdPerm3 As IPermission

    Dim regGen1 As New regGenerator()
    Dim regGen2 As New regGenerator()

    regGen1.ResetIndex()
    While regGen1.CreateReg(regPerm1, reg1, RegistryPermissionAccess.Read)
        If reg1 Is Nothing Then
            GoTo ContinueWhile1
        End If
        Console.WriteLine("**********************************************************" & ControlChars.Lf)
        regGen2.ResetIndex()

        While regGen2.CreateReg(regPerm2, reg2, RegistryPermissionAccess.Read)

            Try
                If regPerm2 Is Nothing Then
                    GoTo ContinueWhile2
                End If
                Dim firstPermission As String = IIf(reg1 = "" Or reg1 Is Nothing, "null", reg1)
                Dim secondPermission As String = IIf(reg2 = "" Or reg2 Is Nothing, "null", reg2)
                regIdPerm3 = CType(regPerm1.Union(regPerm2), RegistryPermission)
                regIdPerm3 = regPerm1.Union(regPerm2)

                If regIdPerm3 Is Nothing Then
                    Console.WriteLine(("The union of " & firstPermission & "  and " & ControlChars.Lf & ControlChars.Tab & secondPermission & " is null."))
                Else
                    Console.WriteLine(("The union of " & firstPermission & "  and " & ControlChars.Lf & ControlChars.Tab & secondPermission & " = " & ControlChars.Lf & ControlChars.Tab & CType(regIdPerm3, RegistryPermission).GetPathList(RegistryPermissionAccess.Read).ToString()))
                End If
            Catch e As Exception
                Console.WriteLine(("An exception was thrown for union :" & e.ToString()))
                returnValue = False
            End Try
ContinueWhile2:
        End While
ContinueWhile1:
    End While


    Return returnValue
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 returnValue = true;

    string reg1,reg2;
    RegistryPermission regPerm1,regPerm2;
    IPermission regIdPerm3;

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

    regGen1.ResetIndex();
    while(regGen1.CreateReg(out regPerm1, out reg1, RegistryPermissionAccess.Read)) 
    {
        if(reg1 == null) continue;
            
        Console.WriteLine("**********************************************************\n");
        regGen2.ResetIndex();

        while(regGen2.CreateReg(out regPerm2, out reg2, RegistryPermissionAccess.Read)) 
        {

            try
            {
                if(regPerm2 == null) continue;

                string firstPermission = reg1 == "" | reg1 == null ? "null" : reg1 ;
                string secondPermission = reg2 == "" | reg2 == null ? "null" : reg2;
                regIdPerm3 = (RegistryPermission)regPerm1.Union(regPerm2);
                regIdPerm3 = regPerm1.Union(regPerm2);

                if(regIdPerm3 == null) 
                {
                    Console.WriteLine("The union of " + firstPermission + "  and \n\t"  
                        + secondPermission + " is null.");
                }
                else
                {
                    Console.WriteLine("The union of " + firstPermission + "  and \n\t"  
                        + secondPermission + " = \n\t" 
                        + ((RegistryPermission)regIdPerm3).GetPathList(RegistryPermissionAccess.Read).ToString());
                }
            }
            catch(Exception e) 
            {
                Console.WriteLine("An exception was thrown for union :" + e);
                returnValue=false;
            }

        }
            
    }

    return returnValue;

}

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

    bool returnValue = true;

    String* reg1;
    String* reg2;
    RegistryPermission* regPerm1;
    RegistryPermission* regPerm2;
    IPermission* regIdPerm3;

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

    regGen1->ResetIndex();
    while(regGen1->CreateReg(&regPerm1, &reg1, RegistryPermissionAccess::Read)) 
    {
        if(reg1 == 0) continue;

        Console::WriteLine(S"**********************************************************\n");
        regGen2->ResetIndex();

        while(regGen2->CreateReg(&regPerm2, &reg2, RegistryPermissionAccess::Read)) 
        {

            try
            {
                if(regPerm2 == 0) continue;

                String* firstPermission = reg1->Equals(S"") || reg1 == 0 ? S"null" : reg1 ;
                String* secondPermission = reg2->Equals(S"") || reg2 == 0 ? S"null" : reg2;
                regIdPerm3 = dynamic_cast<RegistryPermission*>(regPerm1->Union(regPerm2));
                regIdPerm3 = regPerm1->Union(regPerm2);

                if(regIdPerm3 == 0) 
                {
                    Console::WriteLine(S"The union of {0}  and \n\t{1} is null.", firstPermission, secondPermission);
                }
                else
                {
                    Console::WriteLine(S"The union of {0}  and \n\t{1} = \n\t{2}", firstPermission, secondPermission, (dynamic_cast<RegistryPermission*>(regIdPerm3))->GetPathList(RegistryPermissionAccess::Read));
                }
            }
            catch(Exception* e) 
            {
                Console::WriteLine(S"An exception was thrown for union :{0}", e);
                returnValue=false;
            }

        }

    }

    return returnValue;

}

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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

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