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IsolatedStorageFilePermissionAttribute Class

Allows security actions for IsolatedStorageFilePermission to be applied to code using declarative security. This class cannot be inherited.

Namespace: System.Security.Permissions
Assembly: mscorlib (in mscorlib.dll)

'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
<AttributeUsageAttribute(AttributeTargets.Assembly Or AttributeTargets.Class Or AttributeTargets.Struct Or AttributeTargets.Constructor Or AttributeTargets.Method, AllowMultiple:=True, Inherited:=False)> _
Public NotInheritable Class IsolatedStorageFilePermissionAttribute
	Inherits IsolatedStoragePermissionAttribute
'Usage
Dim instance As IsolatedStorageFilePermissionAttribute

/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple=true, Inherited=false) */ 
public final class IsolatedStorageFilePermissionAttribute extends IsolatedStoragePermissionAttribute
SerializableAttribute 
ComVisibleAttribute(true) 
AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple=true, Inherited=false) 
public final class IsolatedStorageFilePermissionAttribute extends IsolatedStoragePermissionAttribute
Not applicable.

The scope of the declaration that is allowed depends on the SecurityAction that is used.

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. For imperative security, use the corresponding permission class.

The following example of a declarative attribute shows the correct way to request IsolatedStorageFilePermission, states that you must have at least this permission to run your code, and requests a maximum user quota of 5 MB.

<Assembly: IsolatedStorageFilePermissionAttribute( _
SecurityAction.RequestMinimum, UserQuota := 5242880)>
'In Visual Basic, you must specify that you are using the assembly scope when making a request.

/** @assembly IsolatedStorageFilePermissionAttribute(SecurityAction.
    RequestMinimum, UserQuota = 5242880)
 */
// In VJ#, you must specify that you are using the assembly scope when making
// a request.

The following example shows how to demand that the calling code has unrestricted IsolatedStorageFilePermission at link time. Demands are typically made in managed libraries (DLLs) to help protect methods or classes from potentially harmful code.

<IsolatedStorageFilePermissionAttribute( _
 SecurityAction.Demand, Unrestricted := True)> _
 Public Class SampleClass

/** @attribute IsolatedStorageFilePermissionAttribute(SecurityAction.Demand, 
    Unrestricted = true)
 */

This example shows how to tell the CLR that code in this assembly requires the IsolatedStoragePermission and also demonstrates how to write and read from isolated storage.

No code example is currently available or this language may not be supported.

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 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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