Determines whether the current permission is a subset of the specified permission.
Assembly: mscorlib (in mscorlib.dll)
- Type: System.Security.IPermission
A permission that is to be tested for the subset relationship. This permission must be of the same type as the current permission.
Return ValueType: System.Boolean
true if the current permission is a subset of the specified permission; otherwise, false.
The target parameter is not null and is not of the same type as the current permission.
The Url property is not a valid URL.
The current permission is a subset of the specified permission if the current permission identifies access to a URL that is wholly contained by the specified permission. For example, a permission that represents access to http://www.fourthcoffee.com/process/grind.htm is a subset of a permission that represents access to http://www.fourthcoffee.com/*. If this method returns true, the current permission represents no more access to the protected resource than does the specified permission.
UrlIdentityPermission supports set operations (, Intersect, and Union) only when the current permission is equal to the specified permission or when one of the permissions uses the wildcard operator ("*").
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.