AppDomain.IsFullyTrusted AppDomain.IsFullyTrusted AppDomain.IsFullyTrusted AppDomain.IsFullyTrusted Property

Definizione

Ottiene un valore che indica se gli assembly caricati nel dominio applicazione corrente vengono eseguiti con attendibilità totale.Gets a value that indicates whether assemblies that are loaded into the current application domain execute with full trust.

public:
 property bool IsFullyTrusted { bool get(); };
public bool IsFullyTrusted { get; }
member this.IsFullyTrusted : bool
Public ReadOnly Property IsFullyTrusted As Boolean

Valore della proprietà

true se gli assembly caricati nel dominio dell'applicazione corrente vengono eseguiti con attendibilità totale; in caso contrario, false.true if assemblies that are loaded into the current application domain execute with full trust; otherwise, false.

Esempi

Nell'esempio seguente vengono illustrati la IsFullyTrusted proprietà e la Assembly.IsFullyTrusted proprietà con domini applicazione completamente attendibili e parzialmente attendibili.The following example demonstrates the IsFullyTrusted property and the Assembly.IsFullyTrusted property with fully trusted and partially trusted application domains. Il dominio applicazione completamente attendibile è il dominio applicazione predefinito per l'applicazione.The fully trusted application domain is the default application domain for the application. Il dominio dell'applicazione parzialmente attendibile viene creato tramite AppDomain.CreateDomain(String, Evidence, AppDomainSetup, PermissionSet, StrongName[]) l'overload del metodo.The partially trusted application domain is created by using the AppDomain.CreateDomain(String, Evidence, AppDomainSetup, PermissionSet, StrongName[]) method overload.

Nell'esempio viene utilizzata Worker una classe che deriva da MarshalByRefObject, quindi è possibile eseguirne il marshalling tra i limiti del dominio applicazione.The example uses a Worker class that derives from MarshalByRefObject, so it can be marshaled across application domain boundaries. Nell'esempio viene creato Worker un oggetto nel dominio applicazione predefinito.The example creates a Worker object in the default application domain. Viene quindi chiamato il TestIsFullyTrusted metodo per visualizzare il valore della proprietà per il dominio dell'applicazione e per due assembly caricati nel dominio dell'applicazione: mscorlib, che fa parte dell'.NET Framework e l'assembly di esempio.It then calls the TestIsFullyTrusted method to display the property value for the application domain and for two assemblies that are loaded into the application domain: mscorlib, which is part of the .NET Framework, and the example assembly. Il dominio applicazione è completamente attendibile, pertanto entrambi gli assembly sono completamente attendibili.The application domain is fully trusted, so both assemblies are fully trusted.

Nell'esempio viene creato Worker un altro oggetto in un dominio applicazione in modalità sandbox e TestIsFullyTrusted viene chiamato nuovamente il metodo.The example creates another Worker object in a sandboxed application domain and again calls the TestIsFullyTrusted method. Mscorlib è sempre attendibile, anche in un dominio applicazione parzialmente attendibile, ma l'assembly di esempio è parzialmente attendibile.Mscorlib is always trusted, even in a partially trusted application domain, but the example assembly is partially trusted.

using System;
 
namespace SimpleSandboxing
{
    public class Worker : MarshalByRefObject
    {
        static void Main()
        {
            Worker w = new Worker();
            w.TestIsFullyTrusted();

            AppDomain adSandbox = GetInternetSandbox();
            w = (Worker) adSandbox.CreateInstanceAndUnwrap(
                               typeof(Worker).Assembly.FullName,
                               typeof(Worker).FullName);
            w.TestIsFullyTrusted();
        }

        public void TestIsFullyTrusted()
        {
            AppDomain ad = AppDomain.CurrentDomain;
            Console.WriteLine("\r\nApplication domain '{0}': IsFullyTrusted = {1}",
                                        ad.FriendlyName, ad.IsFullyTrusted);

            Console.WriteLine("   IsFullyTrusted = {0} for the current assembly",
                             typeof(Worker).Assembly.IsFullyTrusted);

            Console.WriteLine("   IsFullyTrusted = {0} for mscorlib",
                                        typeof(int).Assembly.IsFullyTrusted);
        }

        // ------------ Helper method ---------------------------------------
        static AppDomain GetInternetSandbox()
        {
            // Create the permission set to grant to all assemblies.
            System.Security.Policy.Evidence hostEvidence = new System.Security.Policy.Evidence();
            hostEvidence.AddHostEvidence(new System.Security.Policy.Zone(
                                                         System.Security.SecurityZone.Internet));
            System.Security.PermissionSet pset = 
                                System.Security.SecurityManager.GetStandardSandbox(hostEvidence);

            // Identify the folder to use for the sandbox.
            AppDomainSetup ads = new AppDomainSetup();
            ads.ApplicationBase = System.IO.Directory.GetCurrentDirectory();
 
            // Create the sandboxed application domain.
            return AppDomain.CreateDomain("Sandbox", hostEvidence, ads, pset, null); 
        }
    }
}

/* This example produces output similar to the following:

Application domain 'Example.exe': IsFullyTrusted = True
   IsFullyTrusted = True for the current assembly
   IsFullyTrusted = True for mscorlib

Application domain 'Sandbox': IsFullyTrusted = False
   IsFullyTrusted = False for the current assembly
   IsFullyTrusted = True for mscorlib
 */
Public Class Worker
    Inherits MarshalByRefObject
    
    Shared Sub Main()
 
        Dim w As New Worker()
        w.TestIsFullyTrusted()
        
        Dim adSandbox As AppDomain = GetInternetSandbox()
        w = CType(adSandbox.CreateInstanceAndUnwrap(
                            GetType(Worker).Assembly.FullName, 
                            GetType(Worker).FullName), 
                  Worker)
        w.TestIsFullyTrusted()
    
    End Sub 
    
    Public Sub TestIsFullyTrusted() 

        Dim ad As AppDomain = AppDomain.CurrentDomain
        Console.WriteLine(vbCrLf & "Application domain '{0}': IsFullyTrusted = {1}", 
                          ad.FriendlyName, ad.IsFullyTrusted)
        
        Console.WriteLine("   IsFullyTrusted = {0} for the current assembly", 
                          GetType(Worker).Assembly.IsFullyTrusted)
        
        Console.WriteLine("   IsFullyTrusted = {0} for mscorlib", 
                          GetType(Integer).Assembly.IsFullyTrusted)
    
    End Sub 
    
    ' ------------ Helper method ---------------------------------------
    Shared Function GetInternetSandbox() As AppDomain 

        ' Create the permission set to grant to all assemblies.
        Dim hostEvidence As New System.Security.Policy.Evidence()
        hostEvidence.AddHostEvidence(
                    New System.Security.Policy.Zone(System.Security.SecurityZone.Internet))
        Dim pset As System.Security.PermissionSet = 
                           System.Security.SecurityManager.GetStandardSandbox(hostEvidence)
        
        ' Identify the folder to use for the sandbox.
        Dim ads As New AppDomainSetup()
        ads.ApplicationBase = System.IO.Directory.GetCurrentDirectory()
        
        ' Create the sandboxed application domain.
        Return AppDomain.CreateDomain("Sandbox", hostEvidence, ads, pset, Nothing)
    
    End Function 
End Class 

' This example produces output similar to the following:
'
'Application domain 'Example.exe': IsFullyTrusted = True
'   IsFullyTrusted = True for the current assembly
'   IsFullyTrusted = True for mscorlib
'
'Application domain 'Sandbox': IsFullyTrusted = False
'   IsFullyTrusted = False for the current assembly
'   IsFullyTrusted = True for mscorlib
' 

Commenti

Questo metodo restituisce true sempre per il dominio applicazione predefinito di un'applicazione in esecuzione sul desktop.This method always returns true for the default application domain of an application that runs on the desktop. Restituisce false per un dominio applicazione in modalità sandbox creato tramite l'overload del AppDomain.CreateDomain(String, Evidence, AppDomainSetup, PermissionSet, StrongName[]) metodo, a meno che le autorizzazioni concesse al dominio applicazione non siano equivalenti all'attendibilità totale.It returns false for a sandboxed application domain that was created by using the AppDomain.CreateDomain(String, Evidence, AppDomainSetup, PermissionSet, StrongName[]) method overload, unless the permissions that are granted to the application domain are equivalent to full trust.

Si applica a