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By Derek Beyer

C# COM+ Programming is a must have for builders already operating with COM+ who're able to transition to the .NET Platform. it is possible for you to to take your latest abilities as a COM+ part programmer into the .NET Framework speedy and simply.

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F 28 8/31/01 8:09 AM Page 28 Part I: Interoperating with COM Maintaining COM Object Lifetime In Chapter 1, we discuss the non-deterministic finalization problem. NET is not necessarily destroyed when it is set to null or goes out of scope. NET are destroyed only when a Garbage Collection occurs. This can be a particular problem for managed classes such as RCWs that reference unmanaged COM objects. COM implements a completely alternate system for maintaining object lifetime. In COM, objects are reference-counted.

To place an assembly into the Global Assembly Cache, the assembly must be signed with a public/private key pair. The Type Library Importer provides a switch — /keyfile — that allows you to sign the assembly with your public/private key pair. The /keyfile switch points to a file that contains the public/private key pair. exe). snk The –k parameter tells the Shared Name Utility to generate the keyfile. The file name following the parameter identifies the name of the new file that the utility will create.

As you have learned from Chapter 1, assemblies contain a four-part version number, a simple string name, the originator’s public key, and, optionally, a strong name if the assembly is shared among multiple applications. Net Components from COM library in the registry. During the conversion process, an assembly’s simple name and originator key are used to generate the new TypeLib ID. A given simple name originator key always generates the same TypeLib ID. Type libraries also contain version numbers.

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