August 2003
Intermediate to advanced
380 pages
9h 21m
English
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Chapter 4. Working with .NET Components
Having seen the language-integration examples in the previous chapter, you now know that all .NET assemblies are essentially binary components.[1] You can treat each .NET assembly as a component that you can plug into another component or application, without the need for source code, since all the metadata for the component is stored inside the .NET assembly. While you have to write a ton of plumbing code to build a component in COM, creating a component in .NET involves no extra work, as all .NET assemblies are components by nature.
In this chapter, we examine the more advanced topics, including component deployment, distributed components, and enterprise services, such as transaction management, object pooling, role-based security, and message queuing.
Deployment Options
For a simple program like hello.exe that we built in Chapter 2, deployment is easy: copy the assembly into a directory, and it’s ready to run. When you want to uninstall it, remove the file from the directory. However, when you want to share components with other applications, you’ve got to do some work.
In COM, you must store activation and marshaling[2] information in the registry for components to interoperate; as a result, any COM developer can discuss at length the pain and suffering inherent in COM and the system registry. In .NET, the system registry is no longer necessary for component integration.
In the .NET environment, components can be private, meaning that they ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.