public enum PolicyStatementAttribute {
Nothing = 0x00000000,Exclusive = 0x00000001,LevelFinal = 0x00000002,All = 0x00000003
}
The PolicyStatementAttribute enumeration is used
in conjunction with the PolicyStatement class.
PolicyStatementAttribute contains values that are
assigned to the PolicyStatement.Attributes
property to define a code group's attributes. Code
group attributes affect the policy resolution process by controlling
how the permissions granted by one code group are merged with the
permissions granted by other code groups.
The Exclusive value specifies that the permissions
granted by the code group are the maximum set of permissions that a
group member can receive from the current policy level. Because the
permissions granted by each policy level intersect to determine the
final grant set, a code group with the Exclusive
attribute actually defines the maximum set of permissions in the
final grant set. An assembly or application domain can be a member of
at most one Exclusive code group per policy level,
or the runtime throws a PolicyException.
Policy levels are resolved in the order enterprise, machine, user,
and finally application domain. The LevelFinal
value specifies that no policy levels below the current level will be
evaluated. If resolving the permissions for an assembly, the runtime
always evaluates the application domain policy regardless of whether
the assembly is the member of a LevelFinal code
group.
PolicyStatementAttribute values can be combined
using a logical OR operator, but the enumeration also provides the
All value, which represents both the
Exclusive and LevelFinal
attributes. Nothing means that no attributes are
set and is the default state for a
PolicyStatement.
System.ValueType