JustInTimeActivationAttribute Class
Turns just-in-time (JIT) activation on or off. This class cannot be inherited.
Assembly: System.EnterpriseServices (in System.EnterpriseServices.dll)
| Name | Description | |
|---|---|---|
![]() | JustInTimeActivationAttribute() | Initializes a new instance of the JustInTimeActivationAttribute class. The default constructor enables just-in-time (JIT) activation. |
![]() | JustInTimeActivationAttribute(Boolean) | Initializes a new instance of the JustInTimeActivationAttribute class, optionally allowing the disabling of just-in-time (JIT) activation by passing false as the parameter. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.) |
![]() | GetHashCode() | Returns the hash code for this instance.(Inherited from Attribute.) |
![]() | GetType() | |
![]() | IsDefaultAttribute() | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.) |
![]() | Match(Object^) | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.) |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | _Attribute::GetIDsOfNames(Guid%, IntPtr, UInt32, UInt32, IntPtr) | Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.) |
![]() ![]() | _Attribute::GetTypeInfo(UInt32, UInt32, IntPtr) | Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.) |
![]() ![]() | _Attribute::GetTypeInfoCount(UInt32%) | Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.) |
![]() ![]() | _Attribute::Invoke(UInt32, Guid%, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) | Provides access to properties and methods exposed by an object.(Inherited from Attribute.) |
If JIT activation is specified, then it must not be disabled in the COM+ catalog, and vice versa. If enabled in the COM+ catalog, it must be specified on the component.
JIT activation defaults to off for components which are configured in COM+, but is enabled automatically if automatic transactions are requested.
For more information about using attributes, see Extending Metadata Using Attributes.
The following code example demonstrates the use of this attribute.
#using <System.Windows.Forms.dll> #using <System.Transactions.dll> #using <System.EnterpriseServices.dll> using namespace System; using namespace System::EnterpriseServices; using namespace System::Windows::Forms; [assembly:ApplicationName("ObjectInspector")]; [assembly:ApplicationActivation(ActivationOption::Server)]; [assembly:System::Reflection::AssemblyKeyFile("Inspector.snk")]; [JustInTimeActivation] [ObjectPooling(MinPoolSize=2,MaxPoolSize=100,CreationTimeout=1000)] public ref class ObjectInspector: public ServicedComponent { public: String^ IdentifyObject( Object^ obj ) { // Return this object to the pool after use. ContextUtil::DeactivateOnReturn = true; // Get the supplied object's type. Type^ objType = obj->GetType(); // Return its name. return (objType->FullName); } protected: virtual void Activate() override { MessageBox::Show( String::Format( "Now entering...\nApplication: {0}\nInstance: {1}\nContext: {2}\n", ContextUtil::ApplicationId.ToString(), ContextUtil::ApplicationInstanceId.ToString(), ContextUtil::ContextId.ToString() ) ); } virtual void Deactivate() override { MessageBox::Show( "Bye Bye!" ); } // This object can be pooled. virtual bool CanBePooled() override { return (true); } };
Available since 1.1
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



