UIPermission.IsSubsetOf(IPermission) Yöntem

public:
 override bool IsSubsetOf(System::Security::IPermission ^ target);

public override bool IsSubsetOf (System.Security.IPermission target);

override this.IsSubsetOf : System.Security.IPermission -> bool

Public Overrides Function IsSubsetOf (target As IPermission) As Boolean

Parametreler

Döndürülenler

true geçerli izin belirtilen iznin bir alt kümesiyse; aksi takdirde , false.

Özel durumlar

Örnekler

Aşağıdaki kod örneği yönteminin IsSubsetOf davranışını gösterir. Bu örnek, sınıfı için UIPermission sağlanan daha büyük bir örneğin bir parçasıdır.

// IsSubsetOf determines whether the current permission is a subset of the specified permission.

void IsSubsetOfDemo()
{
    Console::WriteLine("\n**********************  IsSubsetOf() Demo **********************\n");
    UIPermission ^ uiPerm1 = gcnew UIPermission(UIPermissionWindow::SafeTopLevelWindows);
    UIPermission ^ uiPerm2 = gcnew UIPermission(UIPermissionWindow::SafeSubWindows);

    Console::WriteLine("   {0} is {1}a subset of {2} ", uiPerm1->Window,
                            uiPerm1->IsSubsetOf(uiPerm2)?"":"not ", uiPerm2->Window);

    Console::WriteLine("   {0} is {1}a subset of {2} ", uiPerm2->Window,
                            uiPerm2->IsSubsetOf(uiPerm1)?"":"not ", uiPerm1->Window);

    uiPerm1 = gcnew UIPermission(UIPermissionClipboard::AllClipboard);
    uiPerm2 = gcnew UIPermission(UIPermissionClipboard::OwnClipboard);

    Console::WriteLine("   {0} is {1}a subset of {2} ", uiPerm1->Clipboard,
                            uiPerm1->IsSubsetOf(uiPerm2)?"":"not ", uiPerm2->Clipboard);

    Console::WriteLine("   {0} is {1}a subset of {2} ", uiPerm2->Clipboard,
                            uiPerm2->IsSubsetOf(uiPerm1)?"":"not ", uiPerm1->Clipboard);
}

// IsSubsetOf determines whether the current permission is a subset of the specified permission.
private static void IsSubsetOfDemo()
{
    UIPermission uiPerm1 = new UIPermission(UIPermissionWindow.SafeTopLevelWindows);
    UIPermission uiPerm2 = new UIPermission(UIPermissionWindow.SafeSubWindows);
    CheckIsSubsetOfWindow(uiPerm1, uiPerm2);
    uiPerm1 = new UIPermission(UIPermissionClipboard.AllClipboard);
    uiPerm2 = new UIPermission(UIPermissionClipboard.OwnClipboard);
    CheckIsSubsetOfClipBoard(uiPerm1, uiPerm2);
}
private static void CheckIsSubsetOfWindow(UIPermission uiPerm1, UIPermission uiPerm2)
{
    if (uiPerm1.IsSubsetOf(uiPerm2))
    {
        Console.WriteLine(uiPerm1.Window.ToString() + " is a subset of " +
            uiPerm2.Window.ToString());
    }
    else
    {
        Console.WriteLine(uiPerm1.Window.ToString() + " is not a subset of " +
            uiPerm2.Window.ToString());
    }
    if (uiPerm2.IsSubsetOf(uiPerm1))
    {
        Console.WriteLine(uiPerm2.Window.ToString() + " is a subset of " +
            uiPerm1.Window.ToString());
    }
    else
    {
        Console.WriteLine(uiPerm2.Window.ToString() + " is not a subset of " +
            uiPerm1.Window.ToString());
    }
}
private static void CheckIsSubsetOfClipBoard(UIPermission uiPerm1, UIPermission uiPerm2)
{
    if (uiPerm1.IsSubsetOf(uiPerm2))
    {
        Console.WriteLine(uiPerm1.Clipboard.ToString() + " is a subset of " +
            uiPerm2.Clipboard.ToString());
    }
    else
    {
        Console.WriteLine(uiPerm1.Clipboard.ToString() + " is not a subset of " +
            uiPerm2.Clipboard.ToString());
    }
    if (uiPerm2.IsSubsetOf(uiPerm1))
    {
        Console.WriteLine(uiPerm2.Clipboard.ToString() + " is a subset of " +
            uiPerm1.Clipboard.ToString());
    }
    else
    {
        Console.WriteLine(uiPerm2.Clipboard.ToString() + " is not a subset of " +
            uiPerm1.Clipboard.ToString());
    }
}

' IsSubsetOf determines whether the current permission is a subset of the specified permission.
Private Shared Sub IsSubsetOfDemo()
    Dim uiPerm1 As New UIPermission(UIPermissionWindow.SafeTopLevelWindows)
    Dim uiPerm2 As New UIPermission(UIPermissionWindow.SafeSubWindows)
    CheckIsSubsetOfWindow(uiPerm1, uiPerm2)
    uiPerm1 = New UIPermission(UIPermissionClipboard.AllClipboard)
    uiPerm2 = New UIPermission(UIPermissionClipboard.OwnClipboard)
    CheckIsSubsetOfClipBoard(uiPerm1, uiPerm2)

End Sub

Private Shared Sub CheckIsSubsetOfWindow(ByVal uiPerm1 As UIPermission, ByVal uiPerm2 As UIPermission)
    If uiPerm1.IsSubsetOf(uiPerm2) Then
        Console.WriteLine(uiPerm1.Window.ToString() + " is a subset of " + uiPerm2.Window.ToString())
    Else
        Console.WriteLine(uiPerm1.Window.ToString() + " is not a subset of " + uiPerm2.Window.ToString())
    End If

    If uiPerm2.IsSubsetOf(uiPerm1) Then
        Console.WriteLine(uiPerm2.Window.ToString() + " is a subset of " + uiPerm1.Window.ToString())
    Else
        Console.WriteLine(uiPerm2.Window.ToString() + " is not a subset of " + uiPerm1.Window.ToString())
    End If

End Sub

Private Shared Sub CheckIsSubsetOfClipBoard(ByVal uiPerm1 As UIPermission, ByVal uiPerm2 As UIPermission)
    If uiPerm1.IsSubsetOf(uiPerm2) Then
        Console.WriteLine(uiPerm1.Clipboard.ToString() + " is a subset of " + uiPerm2.Clipboard.ToString())
    Else
        Console.WriteLine(uiPerm1.Clipboard.ToString() + " is not a subset of " + uiPerm2.Clipboard.ToString())
    End If

    If uiPerm2.IsSubsetOf(uiPerm1) Then
        Console.WriteLine(uiPerm2.Clipboard.ToString() + " is a subset of " + uiPerm1.Clipboard.ToString())
    Else
        Console.WriteLine(uiPerm2.Clipboard.ToString() + " is not a subset of " + uiPerm1.Clipboard.ToString())
    End If

End Sub

Açıklamalar

Geçerli izin için başarılı olan tüm talepler belirtilen izin için de başarılı olursa, geçerli izin belirtilen iznin bir alt kümesidir. Yani, belirtilen izin en azından alt kümede bulunan izinleri içerir. döndürülmesi trueiçinIsSubsetOf, geçerli iznin UIPermissionWindow hem ve UIPermissionClipboard değerleri belirtilen iznin değerlerine eşit veya daha az izin vermelidir.

Şunlara uygulanır