UIPermission.Union(IPermission) Método

Definición

Crea un permiso que consiste en la unión del permiso actual y el permiso especificado.Creates a permission that is the union of the permission and the specified permission.

public:
 override System::Security::IPermission ^ Union(System::Security::IPermission ^ target);
public override System.Security.IPermission Union (System.Security.IPermission target);
override this.Union : System.Security.IPermission -> System.Security.IPermission
Public Overrides Function Union (target As IPermission) As IPermission

Parámetros

target
IPermission

Permiso para combinar con el permiso actual.A permission to combine with the current permission. Debe ser del mismo tipo que el permiso actual.It must be the same type as the current permission.

Devoluciones

Nuevo permiso que representa la unión del permiso actual y el permiso especificado.A new permission that represents the union of the current permission and the specified permission.

Excepciones

El parámetro target no es null y no es del mismo tipo que el permiso actual.The target parameter is not null and is not of the same type as the current permission.

Ejemplos

En el ejemplo de código siguiente se muestra el Union comportamiento del método.The following code example shows the behavior of the Union method. Este ejemplo forma parte de un ejemplo más extenso proporcionado para UIPermission la clase.This example is part of a larger example provided for the UIPermission class.

Nota

El ejemplo de código está diseñado para mostrar el comportamiento del método, no para demostrar su uso.The code example is intended to show the behavior of the method, not to demonstrate its use. En general, la infraestructura de seguridad utiliza los métodos de las clases de permiso; normalmente no se utilizan en las aplicaciones.In general, the methods of permission classes are used by the security infrastructure; they are not typically used in applications.

   // Union creates a new permission that is the union of the current permission
   // and the specified permission.
void UnionDemo()
{
    Console::WriteLine("\n************************  Union() Demo *************************\n");

    UIPermission ^ uiPerm1 = gcnew UIPermission(UIPermissionWindow::SafeTopLevelWindows);
    UIPermission ^ uiPerm2 = gcnew UIPermission(UIPermissionWindow::SafeSubWindows);

    UIPermission ^ p3 = dynamic_cast<UIPermission^>(uiPerm1->Union(uiPerm2));
    Console::WriteLine("   The union of {0} and  \n\t{1} = {2} ", uiPerm1->Window,
                               uiPerm2->Window, (nullptr != p3)?p3->Window.ToString():"null");
}
// Union creates a new permission that is the union of the current permission
// and the specified permission.
private static void UnionDemo()
{
    UIPermission uiPerm1 = new UIPermission(UIPermissionWindow.SafeTopLevelWindows);
    UIPermission uiPerm2 = new UIPermission(UIPermissionWindow.SafeSubWindows);
    UIPermission p3 = (UIPermission)uiPerm1.Union(uiPerm2);
    if (p3 != null)
    {
        Console.WriteLine("The union of " + uiPerm1.Window.ToString() +
            " and \n\t" + uiPerm2.Window.ToString() + " is \n\t"
            + p3.Window.ToString() + "\n");

    }
    else
    {
        Console.WriteLine("The union of " + uiPerm1.Window.ToString() +
            " and \n\t" + uiPerm2.Window.ToString() + " is null.\n");
    }
}
' Union creates a new permission that is the union of the current permission
' and the specified permission.
Private Shared Sub UnionDemo()
    Dim uiPerm1 As New UIPermission(UIPermissionWindow.SafeTopLevelWindows)
    Dim uiPerm2 As New UIPermission(UIPermissionWindow.SafeSubWindows)
    Dim p3 As UIPermission = CType(uiPerm1.Union(uiPerm2), UIPermission)
    If Not (p3 Is Nothing) Then
        Console.WriteLine("The union of " + uiPerm1.Window.ToString() + " and " + vbLf + vbTab + uiPerm2.Window.ToString() + " is " + vbLf + vbTab + p3.Window.ToString() + vbLf)

    Else
        Console.WriteLine("The union of " + uiPerm1.Window.ToString() + " and " + vbLf + vbTab + uiPerm2.Window.ToString() + " is null." + vbLf)
    End If

End Sub

Comentarios

El resultado de una llamada a Union es un permiso que representa todas las operaciones representadas por el permiso actual y todas las operaciones representadas por el permiso especificado.The result of a call to Union is a permission that represents all the operations represented by the current permission as well as all the operations represented by the specified permission. En concreto, representa los valores más permisivos de UIPermissionWindow y UIPermissionClipboard de los del permiso actual y el permiso especificado.Specifically, it represents the most permissive values of UIPermissionWindow and UIPermissionClipboard from those in the current permission and the specified permission.

Se aplica a