AppDomain::SetAppDomainPolicy Method (PolicyLevel^)

Note: This API is now obsolete.

Establishes the security policy level for this application domain.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

[ObsoleteAttribute("AppDomain policy levels are obsolete and will be removed in a future release of the .NET Framework. See for more information.")]
virtual void SetAppDomainPolicy(
	PolicyLevel^ domainPolicy
) sealed


Type: System.Security.Policy::PolicyLevel^

The security policy level.

Exception Condition

domainPolicy is null.


The security policy level has already been set.


The operation is attempted on an unloaded application domain.

Call this method before an assembly is loaded into the AppDomain in order for the security policy to have effect.

The following example demonstrates how to use the SetAppDomainPolicymethod to set the security policy level of an application domain.

using namespace System;
using namespace System::Threading;
using namespace System::Security;
using namespace System::Security::Policy;
using namespace System::Security::Permissions;
int main()

   // Create a new application domain.
   AppDomain^ domain = System::AppDomain::CreateDomain( "MyDomain" );

   // Create a new AppDomain PolicyLevel.
   PolicyLevel^ polLevel = PolicyLevel::CreateAppDomainLevel();

   // Create a new, empty permission set.
   PermissionSet^ permSet = gcnew PermissionSet( PermissionState::None );

   // Add permission to execute code to the permission set.
   permSet->AddPermission( gcnew SecurityPermission( SecurityPermissionFlag::Execution ) );

   // Give the policy level's root code group a new policy statement based
   // on the new permission set.
   polLevel->RootCodeGroup->PolicyStatement = gcnew PolicyStatement( permSet );

   // Give the new policy level to the application domain.
   domain->SetAppDomainPolicy( polLevel );

   // Try to execute the assembly.

      // This will throw a PolicyException if the executable tries to
      // access any resources like file I/O or tries to create a window.
      domain->ExecuteAssembly( "Assemblies\\MyWindowsExe.exe" );
   catch ( PolicyException^ e ) 
      Console::WriteLine( "PolicyException: {0}", e->Message );

   AppDomain::Unload( domain );


requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

.NET Framework
Available since 1.1
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