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Traditional COM+ services such as distributed transactions, just-in-time activation, object pooling, and concurrency management are available to .NET components. With .NET, such services are referred to as Enterprise Services. They are essential for many middle-tier .NET components running within .NET Web applications.
To add services to a .NET component, you must derive the component class from the EnterpriseServices.ServicedComponent base class and then specify precise service requirements using .NET attributes compiled into the assembly that hosts the component.
This chapter describes how to build secure serviced components and how to call them from ASP.NET Web applications.
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