WebPermissionAttribute Třída

Definice

public ref class WebPermissionAttribute sealed : System::Security::Permissions::CodeAccessSecurityAttribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class WebPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
[System.Serializable]
public sealed class WebPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
public sealed class WebPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
[<System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type WebPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
[<System.Serializable>]
type WebPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
type WebPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

Public NotInheritable Class WebPermissionAttribute
Inherits CodeAccessSecurityAttribute

Dědičnost

Object

Attribute

SecurityAttribute

CodeAccessSecurityAttribute

WebPermissionAttribute

Atributy

AttributeUsageAttribute ObsoleteAttribute SerializableAttribute

Příklady

Následující příklad ukazuje, jak použít WebPermissionAttribute na metodu.

public:
   // Deny access to a specific resource by setting the ConnectPattern property.
   [method:WebPermission(SecurityAction::Deny,ConnectPattern="http://www.contoso.com/")]

   void Connect()
   {
      // Create a Connection.
      HttpWebRequest^ myWebRequest = (HttpWebRequest^)(WebRequest::Create( "http://www.contoso.com" ));
      Console::WriteLine( "This line should never be printed" );
   }

    // Deny access to a specific resource by setting the ConnectPattern property. 
   [WebPermission(SecurityAction.Deny, ConnectPattern=@"http://www\.contoso\.com/")]

public void Connect() 
     {
        // Create a Connection.  
        HttpWebRequest myWebRequest = (HttpWebRequest)WebRequest.Create("http://www.contoso.com");
        Console.WriteLine("This line should never be printed");
     }

' Deny access to a specific resource by setting the ConnectPattern property. 
<WebPermission(SecurityAction.Deny, ConnectPattern := "http://www\.contoso\.com/.*")> Public Sub Connect()

' Create a Connection.	 
Dim myWebRequest As HttpWebRequest = CType(WebRequest.Create("http://www.contoso.com"), HttpWebRequest)
Console.WriteLine("This line should never be printed")

Poznámky

WebPermissionAttribute umožňuje deklarativně určit, které řetězce identifikátoru URI a řetězce regulárního výrazu může vaše třída používat.

Informace o zabezpečení zadané v WebPermissionAttribute souboru jsou uloženy v metadatech cíle atributu, což je třída, na kterou WebPermissionAttribute se použije. Systém k této informaci přistupuje za běhu. Objekt System.Security.Permissions.SecurityAction předaný konstruktoru určuje povolené WebPermissionAttribute cíle. Systém používá metodu WebPermission vrácenou CreatePermission k převodu informací o zabezpečení cíle atributu na serializovatelný formulář uložený v metadatech.

Konstruktory

Vlastnosti

Metody

Explicitní implementace rozhraní

Platí pro