TypeBuilder.AddDeclarativeSecurity(SecurityAction, PermissionSet) Metode

Definisi

Ruang nama:

System.Reflection.Emit

Rakitan:

mscorlib.dll

Menambahkan keamanan deklaratif ke tipe ini.

public:
 void AddDeclarativeSecurity(System::Security::Permissions::SecurityAction action, System::Security::PermissionSet ^ pset);

public void AddDeclarativeSecurity (System.Security.Permissions.SecurityAction action, System.Security.PermissionSet pset);

member this.AddDeclarativeSecurity : System.Security.Permissions.SecurityAction * System.Security.PermissionSet -> unit

Public Sub AddDeclarativeSecurity (action As SecurityAction, pset As PermissionSet)

Parameter

action

SecurityAction

Tindakan keamanan yang akan diambil seperti Demand, Assert, dan sebagainya.

pset

PermissionSet

Kumpulan izin yang berlaku untuk tindakan.

Pengecualian

ArgumentOutOfRangeException

action tidak valid (RequestMinimum, RequestOptional, dan RequestRefuse tidak valid).

InvalidOperationException

Jenis yang berisi telah dibuat menggunakan CreateType().

-atau-

Kumpulan pset izin berisi tindakan yang ditambahkan sebelumnya oleh AddDeclarativeSecurity.

ArgumentNullException

psetadalah null.

Contoh

Contoh berikut menunjukkan penggunaan AddDeclarativeSecurity metode untuk menambahkan permintaan SecurityPermission keamanan dengan SecurityPermissionFlag.ControlEvidence bendera ke jenis dinamis bernama MyDynamicClass, dalam rakitan bernama EmittedExample.dll. Contohnya tidak menghasilkan output konsol; setelah menjalankannya, Anda dapat menggunakan Ildasm.exe (IL Disassembler) untuk memeriksa EmittedExample.dll. Di MyDynamicClass, buka .class public auto ansi pernyataan untuk melihat izin deklaratif.

using namespace System;
using namespace System::Reflection;
using namespace System::Reflection::Emit;
using namespace System::Security;
using namespace System::Security::Permissions;

int main()
{
   // Create a simple name for the assembly; create the assembly and module.
   AssemblyName^ myAssemblyName = gcnew AssemblyName("EmittedAssembly");
   AssemblyBuilder^ myAssemblyBuilder = 
       AppDomain::CurrentDomain->DefineDynamicAssembly( myAssemblyName, AssemblyBuilderAccess::RunAndSave );
   ModuleBuilder^ myModuleBuilder = 
       myAssemblyBuilder->DefineDynamicModule( "EmittedAssembly", "EmittedAssembly.dll");
   
   // Define a public class named "MyDynamicClass" in the assembly.
   TypeBuilder^ myTypeBuilder = myModuleBuilder->DefineType( "MyDynamicClass", TypeAttributes::Public );
   

   // Create a permission set and add a security permission
   // with the ControlEvidence flag.
   //
   PermissionSet^ myPermissionSet = gcnew PermissionSet(PermissionState::None);
   myPermissionSet->AddPermission(
      gcnew SecurityPermission(SecurityPermissionFlag::ControlEvidence));

   // Add the permission set to the MyDynamicClass type,
   // as a declarative security demand.
   //
   myTypeBuilder->AddDeclarativeSecurity(SecurityAction::Demand, myPermissionSet);

   
   Type^ myType = myTypeBuilder->CreateType();
   myAssemblyBuilder->Save("EmittedAssembly.dll");
}

using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Security;
using System.Security.Permissions;

namespace CustomAttribute_Sample
{
   public class MyApplication
   {
      static void Main()
      {
         // Create a simple name for the assembly, and create the assembly and module.
         AssemblyName myAssemblyName = new AssemblyName("EmittedAssembly");
         AssemblyBuilder myAssemblyBuilder =
            AppDomain.CurrentDomain.DefineDynamicAssembly(myAssemblyName, AssemblyBuilderAccess.RunAndSave);
         ModuleBuilder myModuleBuilder =
            myAssemblyBuilder.DefineDynamicModule("EmittedAssembly", "EmittedAssembly.dll");

         // Define a public class named "MyDynamicClass" in the assembly.
         TypeBuilder myTypeBuilder = myModuleBuilder.DefineType("MyDynamicClass",
            TypeAttributes.Public);

         // Create a permission set and add a security permission
         // with the ControlEvidence flag.
         //
         PermissionSet myPermissionSet = new PermissionSet(PermissionState.None);
         myPermissionSet.AddPermission(
             new SecurityPermission(SecurityPermissionFlag.ControlEvidence));

         // Add the permission set to the MyDynamicClass type,
         // as a declarative security demand.
         //
         myTypeBuilder.AddDeclarativeSecurity(SecurityAction.Demand, myPermissionSet);

         Type myType = myTypeBuilder.CreateType();
         myAssemblyBuilder.Save("EmittedAssembly.dll");
      }
   }
}

Imports System.Reflection
Imports System.Reflection.Emit
Imports System.Security
Imports System.Security.Permissions

Namespace CustomAttribute_Sample

   Class MyApplication
      
      Shared Sub Main()
         ' Create a simple name for the assembly; create the assembly and the module.        
         Dim myAssemblyName As New AssemblyName("EmittedAssembly")
         Dim myAssemblyBuilder As AssemblyBuilder = _
                  AppDomain.CurrentDomain.DefineDynamicAssembly( _
                          myAssemblyName, AssemblyBuilderAccess.RunAndSave)
         Dim myModuleBuilder As ModuleBuilder = _
                  myAssemblyBuilder.DefineDynamicModule("EmittedAssembly", "EmittedAssembly.dll")

         ' Define a public class named "MyDynamicClass" in the assembly.
         Dim myTypeBuilder As TypeBuilder = _
                  myModuleBuilder.DefineType("MyDynamicClass", TypeAttributes.Public)


         ' Create a permission set and add a security permission
         ' with the ControlEvidence flag.
         '
         Dim myPermissionSet As New PermissionSet(PermissionState.None)
         Dim ce As New SecurityPermission(SecurityPermissionFlag.ControlEvidence)
         myPermissionSet.AddPermission(ce)

         ' Add the permission set to the MyDynamicClass type,
         ' as a declarative security demand.
         '
         myTypeBuilder.AddDeclarativeSecurity(SecurityAction.Demand, myPermissionSet)


         Dim myType As Type = myTypeBuilder.CreateType()
         myAssemblyBuilder.Save("EmittedAssembly.dll")
      End Sub 
   End Class 
End Namespace

Keterangan

AddDeclarativeSecurity dapat dipanggil beberapa kali dengan setiap panggilan yang menentukan tindakan keamanan (seperti Permintaan, Pernyataan, atau Tolak) dan sekumpulan izin yang berlaku untuk tindakan.

Catatan

Dalam .NET Framework versi 1.0, 1.1, dan 2.0, atribut keamanan deklaratif yang diterapkan ke jenis dengan menggunakan metode ini disimpan dalam format metadata XML lama.