While most application developers may not need to write a custom host, understanding what is involved provides a great deal of insight into the architecture of the CLR. After covering how the CLR is started and loaded into a process, how to set the available configuration options, and how a host defines application domains, this article explains how to design a custom host. Important concepts include making the right decisions about the application domain boundaries for the host, configuring them correctly, loading and executing user code, and resolving references to assemblies. Setting security policy and unloading application domains as the application shuts down are also explained.
MSDN Magazine March 2001
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