TypeBuilder.AddDeclarativeSecurity(SecurityAction, PermissionSet) 方法

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)

参数

例外

示例

下面的示例演示如何在AddDeclarativeSecurity名为 EmittedExample.dll的程序集中使用标记向名为 SecurityPermission 的动态类型添加安全需求SecurityPermissionFlag.ControlEvidenceMyDynamicClass。 该示例不生成控制台输出;运行后，可以使用 Ildasm.exe（IL 反汇编程序） 检查 EmittedExample.dll。 在 MyDynamicClass中，打开 .class public auto ansi 该语句以查看声明性权限。

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

注解

AddDeclarativeSecurity 每次调用指定安全操作（如 Demand、Assert 或 Deny）和一组应用于该操作的权限时，可以多次调用。