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UrlIdentityPermissionAttribute Class

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

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

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
[AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple=true, Inherited=false)] 
public sealed class UrlIdentityPermissionAttribute : CodeAccessSecurityAttribute
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
/** @attribute AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple=true, Inherited=false) */ 
public final class UrlIdentityPermissionAttribute extends CodeAccessSecurityAttribute
SerializableAttribute 
ComVisibleAttribute(true) 
AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple=true, Inherited=false) 
public final class UrlIdentityPermissionAttribute extends CodeAccessSecurityAttribute
Not applicable.

The complete URL is considered, including the protocol (HTTP, HTTPS, FTP) and the file. For example, http://www.fourthcoffee.com/process/grind.htm is a complete URL.

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

NoteImportant:

In the .NET Framework versions 1.0 and 1.1, demands on the identity permissions are effective even when the calling assembly is fully trusted. That is, although the calling assembly has full trust, a demand for an identity permission fails if the assembly does not meet the demanded criteria. In the .NET Framework version 2.0, demands for identity permissions are ineffective if the calling assembly has full trust. This assures consistency for all permissions, eliminating the treatment of identity permissions as a special case.

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 UrlIdentityPermission and states that you must have the specified URL identity to run your code. Code will execute only if run from the specified URL.

[assembly:UrlIdentityPermissionAttribute(SecurityAction.RequestMinimum, 
 Url="http://example.microsoft.com/sample/sampleapp.exe")]
 //In C#, you must specify that you are using the assembly scope when making a request. 

/** @assembly UrlIdentityPermissionAttribute(SecurityAction.RequestMinimum,
    Url = "http://example.microsoft.com/sample/sampleapp.exe")
 */

// 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 the specified URL identity at link time. Code will execute only if run from the specified URL.

[UrlIdentityPermissionAttribute(SecurityAction.Demand, Url="http://example.microsoft.com/sample/sampleapp.exe")]


/** @attribute UrlIdentityPermissionAttribute(SecurityAction.Demand, 
    Url = "http://example.microsoft.com/sample/sampleapp.exe")
 */

System.Object
   System.Attribute
     System.Security.Permissions.SecurityAttribute
       System.Security.Permissions.CodeAccessSecurityAttribute
        System.Security.Permissions.UrlIdentityPermissionAttribute

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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