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UrlIdentityPermission.Union Method

Creates a permission that is the union of the current permission and the specified permission.

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

public override IPermission Union(
	IPermission target
)

Parameters

target
Type: System.Security.IPermission
A permission to combine 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 union of the current permission and the specified permission.

Implements

IPermission.Union(IPermission)

ExceptionCondition
ArgumentException

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

-or-

The Url property is not a valid URL.

-or-

The two permissions are not equal and one is not a subset of the other.

The result of a call to the Union method is a permission that represents access to the URL as represented by the current permission, as well as access to the URL as represented by the specified permission.

The UrlIdentityPermission class supports set operations IsSubsetOf, Intersect, and Union) only when the current permission is equal to the specified permission, or when one of the permissions uses the wildcard operator ("*") and one is a subset of the other.

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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