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ReflectionPermission.Intersect Method

Creates and returns a permission that is the intersection of the current permission and the specified permission.

Namespace:  System.Security.Permissions
Assembly:  mscorlib (in mscorlib.dll)

public override IPermission Intersect(
	IPermission target
)

Parameters

target
Type: System.Security.IPermission

A permission to intersect with the current permission. It must be of the same type as the current permission.

Return Value

Type: System.Security.IPermission
A new permission that represents the intersection of the current permission and the specified permission. This new permission is null if the intersection is empty.

Implements

IPermission.Intersect(IPermission)

ExceptionCondition
ArgumentException

The target parameter is not null and is not of the same type as the current permission.

The intersection of two permissions is a permission that describes the set of operations they both describe in common. Only a demand that passes both original permissions will pass the intersection.

The following code example shows the behavior of the Intersect method. This example is part of a larger example provided for the ReflectionPermission class.

NoteNote

The code example is intended to show the behavior of the method, not to demonstrate its use. In general, the methods of permission classes are used by the security infrastructure; they are not typically used in applications.

private static void IntersectDemo()
{
    ReflectionPermission memberAccessPerm = new ReflectionPermission(ReflectionPermissionFlag.MemberAccess);
    ReflectionPermission restrictedMemberAccessPerm = new ReflectionPermission(ReflectionPermissionFlag.RestrictedMemberAccess);
    ReflectionPermission reflectionPerm3 = (ReflectionPermission)memberAccessPerm.Intersect(restrictedMemberAccessPerm);
    if (reflectionPerm3 != null)
    {
        Console.WriteLine("The intersection of " + memberAccessPerm.Flags +
            " and " + restrictedMemberAccessPerm.Flags + " = " +
            ((ReflectionPermission)reflectionPerm3).Flags.ToString());
    }
    else
    {
        Console.WriteLine("The intersection of " + memberAccessPerm.Flags + " and " +
            restrictedMemberAccessPerm.Flags + " is null.");
    }

}

.NET Framework

Supported in: 4.5.3, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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