TypeBuilder.AddDeclarativeSecurity(SecurityAction, PermissionSet) 方法

定义

命名空间:

System.Reflection.Emit

程序集:

mscorlib.dll

将声明性安全添加到此类型。

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

action

SecurityAction

要执行的安全操作，如 Demand、Assert 等。

pset

PermissionSet

应用此操作的权限集。

例外

ArgumentOutOfRangeException

action 无效（RequestMinimum、RequestOptional 和 RequestRefuse 无效）。

InvalidOperationException

已使用 CreateType() 创建包含类型。

- 或 -

权限集 pset 包含之前由 AddDeclarativeSecurity 添加的操作。

ArgumentNullException

pset 为 null。

示例

下面的示例演示了如何使用 AddDeclarativeSecurity 方法将 具有 SecurityPermissionFlag.ControlEvidence 标志的安全需求SecurityPermission添加到名为 MyDynamicClass的动态类型，该类型位于名为 EmittedExample.dll 的程序集中。 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) 来检查 EmittedExample.dll。 在 MyDynamicClass中， .class public auto ansi 打开 语句以查看声明性权限。

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

注解

AddDeclarativeSecurity 可以多次调用，每次调用指定一个安全操作 (（如 Demand、Assert 或 Deny) ）以及一组应用于该操作的权限。

注意

在 .NET Framework版本 1.0、1.1 和 2.0 中，使用此方法应用于类型的声明性安全属性以旧的 XML 元数据格式存储。