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PolicyLevel Class

Represents the security policy levels for the common language runtime. This class cannot be inherited.

System.Object
  System.Security.Policy.PolicyLevel

Namespace:  System.Security.Policy
Assembly:  mscorlib (in mscorlib.dll)
[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class PolicyLevel

The PolicyLevel type exposes the following members.

  NameDescription
Public propertyFullTrustAssemblies Obsolete. Gets a list of StrongNameMembershipCondition objects used to determine whether an assembly is a member of the group of assemblies used to evaluate security policy.
Public propertyLabelGets a descriptive label for the policy level.
Public propertyNamedPermissionSetsGets a list of named permission sets defined for the policy level.
Public propertyRootCodeGroupGets or sets the root code group for the policy level.
Public propertyStoreLocationGets the path where the policy file is stored.
Public propertyTypeGets the type of the policy level.
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  NameDescription
Public methodAddFullTrustAssembly(StrongName) Obsolete. Adds a StrongNameMembershipCondition corresponding to the specified StrongName to the list of StrongNameMembershipCondition objects used to determine whether an assembly is a member of the group of assemblies that should not be evaluated.
Public methodAddFullTrustAssembly(StrongNameMembershipCondition) Obsolete. Adds the specified StrongNameMembershipCondition to the list of StrongNameMembershipCondition objects used to determine whether an assembly is a member of the group of assemblies that should not be evaluated.
Public methodAddNamedPermissionSetAdds a NamedPermissionSet to the current policy level.
Public methodChangeNamedPermissionSetReplaces a NamedPermissionSet in the current policy level with the specified PermissionSet.
Public methodStatic memberCreateAppDomainLevel Obsolete. Creates a new policy level for use at the application domain policy level.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodFromXmlReconstructs a security object with a given state from an XML encoding.
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetNamedPermissionSetReturns the NamedPermissionSet in the current policy level with the specified name.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodRecoverReplaces the configuration file for this PolicyLevel with the last backup (reflecting the state of policy prior to the last time it was saved) and returns it to the state of the last save.
Public methodRemoveFullTrustAssembly(StrongName) Obsolete. Removes an assembly with the specified StrongName from the list of assemblies the policy level uses to evaluate policy.
Public methodRemoveFullTrustAssembly(StrongNameMembershipCondition) Obsolete. Removes an assembly with the specified StrongNameMembershipCondition from the list of assemblies the policy level uses to evaluate policy.
Public methodRemoveNamedPermissionSet(NamedPermissionSet)Removes the specified NamedPermissionSet from the current policy level.
Public methodRemoveNamedPermissionSet(String)Removes the NamedPermissionSet with the specified name from the current policy level.
Public methodResetReturns the current policy level to the default state.
Public methodResolveResolves policy based on evidence for the policy level, and returns the resulting PolicyStatement.
Public methodResolveMatchingCodeGroupsResolves policy at the policy level and returns the root of a code group tree that matches the evidence.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodToXmlCreates an XML encoding of the security object and its current state.
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Important noteImportant

Starting with the .NET Framework 4, the common language runtime (CLR) is moving away from providing security policy for computers. We recommend that you use Windows Software Restriction Policies (SRP) or AppLocker as a replacement for CLR security policy. The information in this topic applies to the .NET Framework version 3.5 and earlier; it does not apply to the .NET Framework 4 and later. For more information about this and other changes, see Security Changes in the .NET Framework.

The highest level of security policy is enterprise-wide. Successive lower levels of hierarchy represent further policy restrictions, but can never grant more permissions than allowed by higher levels. The following policy levels are implemented:

  1. Enterprise: Security policy for all managed code in an enterprise.

  2. Machine: Security policy for all managed code run on the computer.

  3. User: Security policy for all managed code run by the user.

  4. Application domain: Security policy for all managed code in an application.

A policy level consists of a set of code groups organized into a single rooted tree (see CodeGroup), a set of named permission sets that are referenced by the code groups to specify permissions to be granted to code belonging to the code group, and a list of fully-trusted assemblies.

Use SecurityManager.PolicyHierarchy to enumerate the policy levels.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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