Provides a code group that uses the zone from which the assembly was downloaded as the membership condition.
System.dll
Object
↣ CodeGroup
↣ ZoneCodeGroup
The ZoneCodeGroup class is used to create code groups that grant permissions based on the download zone of an assembly.
The .NET Framework uses the Zone enumeration to represent different security zones. When an assembly is loaded, the Code Access Security (CAS)
policy provider can evaluate its download zone and determine the appropriate code group membership.
Note: Code Access Security (CAS) is deprecated in .NET Core and later versions. This class is primarily relevant for applications targeting older versions of the .NET Framework.
public ZoneCodeGroup()Initializes a new instance of the ZoneCodeGroup class with default settings.
public ZoneCodeGroup(
SecurityElement el
)Initializes a new instance of the ZoneCodeGroup class from the specified XML serialization store.
elSystem.Security.SecurityElement object that represents a code group and its properties.
public override bool Equals(
object o
)Determines whether the specified object is equal to the current object.
public override int GetHashCode()Serves as the default hash function.
public override PolicyStatement GetPolicyStatement(
IMembershipCondition membershipCondition
)Creates and returns a new policy statement for the specified membership condition.
membershipConditionIMembershipCondition for which to create a policy statement.PolicyStatement object that represents the permissions for the specified membership condition.
public override System.Collections.IEnumerator GetRules()Returns an enumerator for the child code groups.
public override IMembershipCondition GetMembershipCondition()Gets the membership condition for the code group.
IMembershipCondition for the code group.
public override void FromXml(
SecurityElement e,
IPolicyFactory policyFactory
)Reconstructs a code group object from the specified XML element.
epolicyFactory
public override SecurityElement ToXml()Returns an XML encoding of the code group, which can be used to serialize a castom policy level.
System.Security.SecurityElement object that represents the code group.
public string Description { get; set; }Gets or sets a description of the code group.
public int MergeLimit { get; set; }Gets or sets the merge limit for the code group.
public string Name { get; set; }Gets or sets the name of the code group.
The following code example demonstrates how to create a ZoneCodeGroup and add it to a policy level.
using System;
using System.Security;
using System.Security.Policy;
using System.Collections;
public class Example
{
public static void Main(string[] args)
{
// Create a new ZoneCodeGroup for the Internet zone
ZoneCodeGroup internetZoneGroup = new ZoneCodeGroup();
internetZoneGroup.Name = "InternetZoneGroup";
internetZoneGroup.Description = "Code group for assemblies downloaded from the Internet.";
// Create a membership condition for the Internet zone
ZoneMembershipCondition internetZoneCondition = new ZoneMembershipCondition(SecurityZone.Internet);
internetZoneGroup.MembershipCondition = internetZoneCondition;
// Create a policy statement granting full trust
PolicyStatement fullTrustStatement = new PolicyStatement(
new PermissionSet(null), // null means grant all permissions
PolicyStatementAttribute.Nothing
);
internetZoneGroup.PolicyStatement = fullTrustStatement;
// You would typically add this to an IPolicyLevel object
// For demonstration purposes, we'll just show its creation.
Console.WriteLine($"Created ZoneCodeGroup: {internetZoneGroup.Name}");
Console.WriteLine($"Membership Condition: {internetZoneGroup.MembershipCondition.GetType().Name}");
Console.WriteLine($"Policy Statement Permissions: {internetZoneGroup.PolicyStatement.PermissionSet.IsFullyTrusted}");
}
}
Platform Requirements: Works on .NET Framework 1.1 and later.
Namespace: System.Net.Security
Assembly: System.dll