Specifies the base attribute class for code access security.
Namespace:
System.Security.Permissions
Assembly:
mscorlib (in mscorlib.dll)
Visual Basic (Declaration)
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
<AttributeUsageAttribute(AttributeTargets.Assembly Or AttributeTargets.Class Or AttributeTargets.Struct Or AttributeTargets.Constructor Or AttributeTargets.Method, AllowMultiple := True, _
Inherited := False)> _
Public MustInherit Class CodeAccessSecurityAttribute _
Inherits SecurityAttribute
Dim instance As CodeAccessSecurityAttribute
[SerializableAttribute]
[ComVisibleAttribute(true)]
[AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple = true,
Inherited = false)]
public abstract class CodeAccessSecurityAttribute : SecurityAttribute
[SerializableAttribute]
[ComVisibleAttribute(true)]
[AttributeUsageAttribute(AttributeTargets::Assembly|AttributeTargets::Class|AttributeTargets::Struct|AttributeTargets::Constructor|AttributeTargets::Method, AllowMultiple = true,
Inherited = false)]
public ref class CodeAccessSecurityAttribute abstract : public SecurityAttribute
public abstract class CodeAccessSecurityAttribute extends SecurityAttribute
This attribute class associates a SecurityAction, for example, Demand, with a custom security attribute.
The types that derive from CodeAccessSecurityAttribute are used to help restrict access to resources or securable operations.
The security information declared by a security attribute is stored in the metadata of the attribute target and is accessed by the system at run time. Security attributes are used only for declarative security. Use the corresponding permission class derived from CodeAccessPermission for imperative security.
Notes to Inheritors: All permission attributes derived from this class must have only a single constructor that takes a SecurityAction as its only parameter.
The following example shows a permission attribute derived from the CodeAccessSecurityAttribute class.
Imports System
Imports System.IO
Imports System.Runtime.Remoting
Imports System.Security
Imports System.Security.Permissions
Imports System.Reflection
Imports MyPermission
Imports Microsoft.VisualBasic
' Use the command line option '/keyfile' or appropriate project settings to sign this assembly.
<Assembly: System.Security.AllowPartiallyTrustedCallersAttribute()>
Namespace MyPermissionAttribute
<AttributeUsage(AttributeTargets.All, AllowMultiple:=True, Inherited:=False)> Public NotInheritable Class NameIdPermissionAttribute
Inherits CodeAccessSecurityAttribute
Private m_Name As String = Nothing
Private m_unrestricted As Boolean = False
Public Sub New(ByVal action As SecurityAction)
MyBase.New(action)
End Sub 'New
Public Property Name() As String
Get
Return m_name
End Get
Set(ByVal Value As String)
m_name = Value
End Set
End Property
Public Overrides Function CreatePermission() As IPermission
If m_unrestricted Then
Throw New ArgumentException("Unrestricted permissions not allowed in identity permissions.")
Else
If m_name Is Nothing Then
Return New NameIdPermission(PermissionState.None)
End If
Return New NameIdPermission(m_name)
End If
End Function 'CreatePermission
End Class ' NameIdPermissionAttribute
End Namespace
using System;
using System.IO;
using System.Runtime.Remoting;
using System.Security;
using System.Security.Permissions;
using System.Reflection;
using MyPermission;
// Use the command line option '/keyfile' or appropriate project settings to sign this assembly.
[assembly: System.Security.AllowPartiallyTrustedCallersAttribute ()]
namespace MyPermissionAttribute
{
[AttributeUsage (AttributeTargets.Method | AttributeTargets.Constructor | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Assembly, AllowMultiple = true, Inherited = false)]
[Serializable]
sealed public class NameIdPermissionAttribute : CodeAccessSecurityAttribute
{
private String m_Name = null;
private bool m_unrestricted = false;
public NameIdPermissionAttribute (SecurityAction action): base( action )
{
}
public String Name
{
get { return m_Name; }
set { m_Name = value; }
}
public override IPermission CreatePermission ()
{
if (m_unrestricted)
{
throw new ArgumentException ("Unrestricted permissions not allowed in identity permissions.");
}
else
{
if (m_Name == null)
return new NameIdPermission (PermissionState.None);
return new NameIdPermission (m_Name);
}
}
}
}
System..::.Object
System..::.Attribute
System.Security.Permissions..::.SecurityAttribute
System.Security.Permissions..::.CodeAccessSecurityAttribute
System.Configuration..::.ConfigurationPermissionAttribute
System.Data.Common..::.DBDataPermissionAttribute
System.Data.OracleClient..::.OraclePermissionAttribute
System.Diagnostics..::.EventLogPermissionAttribute
System.Diagnostics..::.PerformanceCounterPermissionAttribute
System.DirectoryServices..::.DirectoryServicesPermissionAttribute
System.Drawing.Printing..::.PrintingPermissionAttribute
System.Messaging..::.MessageQueuePermissionAttribute
System.Net..::.DnsPermissionAttribute
System.Net.Mail..::.SmtpPermissionAttribute
System.Net.NetworkInformation..::.NetworkInformationPermissionAttribute
System.Net.PeerToPeer.Collaboration..::.PeerCollaborationPermissionAttribute
System.Net.PeerToPeer..::.PnrpPermissionAttribute
System.Net..::.SocketPermissionAttribute
System.Net..::.WebPermissionAttribute
System.Security.Permissions..::.DataProtectionPermissionAttribute
System.Security.Permissions..::.EnvironmentPermissionAttribute
System.Security.Permissions..::.FileDialogPermissionAttribute
System.Security.Permissions..::.FileIOPermissionAttribute
System.Security.Permissions..::.GacIdentityPermissionAttribute
System.Security.Permissions..::.HostProtectionAttribute
System.Security.Permissions..::.IsolatedStoragePermissionAttribute
System.Security.Permissions..::.KeyContainerPermissionAttribute
System.Security.Permissions..::.MediaPermissionAttribute
System.Security.Permissions..::.PermissionSetAttribute
System.Security.Permissions..::.PrincipalPermissionAttribute
System.Security.Permissions..::.PublisherIdentityPermissionAttribute
System.Security.Permissions..::.ReflectionPermissionAttribute
System.Security.Permissions..::.RegistryPermissionAttribute
System.Security.Permissions..::.SecurityPermissionAttribute
System.Security.Permissions..::.SiteIdentityPermissionAttribute
System.Security.Permissions..::.StorePermissionAttribute
System.Security.Permissions..::.StrongNameIdentityPermissionAttribute
System.Security.Permissions..::.UIPermissionAttribute
System.Security.Permissions..::.UrlIdentityPermissionAttribute
System.Security.Permissions..::.WebBrowserPermissionAttribute
System.Security.Permissions..::.ZoneIdentityPermissionAttribute
System.ServiceProcess..::.ServiceControllerPermissionAttribute
System.Transactions..::.DistributedTransactionPermissionAttribute
System.Web..::.AspNetHostingPermissionAttribute
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference
Other Resources