DnsPermission.Union Method (IPermission)
Creates a permission instance that is the union of the current permission instance and the specified permission instance.
Assembly: System (in System.dll)
Return ValueType: System.Security.IPermission
A DnsPermission instance that represents the union of the current DnsPermission instance with the specified DnsPermission instance. If target is null, this method returns a copy of the current instance. If the current instance or target is unrestricted, this method returns a DnsPermission instance that is unrestricted; otherwise, it returns a DnsPermission instance that is restricted.
Available since 1.1