UrlIdentityPermission.Union(IPermission) Method

Definition

Namespace:

System.Security.Permissions

Assembly:

System.Security.Permissions.dll

Source:

UrlIdentityPermission.cs

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

C#

public override System.Security.IPermission Union(System.Security.IPermission target);

Parameters

target

IPermission

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

Returns

IPermission

A new permission that represents the union of the current permission and the specified permission.

Exceptions

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.

NotSupportedException

The operation is ambiguous because the permission represents multiple identities.

Remarks

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.

Applies to