dotnet web services: I have configured a SchemaImporterExtension in machine.config, which, when I
choose Add/Update Web Reference in Visual Studio 2005, iterate through all
the referenced assemblies by the current project to resolve types defined in
the wsdl. It works beautiful in our development enviorenment, except that
every time I execute a Add/Update action, some assembly files are locked and
trying to re-build the solution fails with error: unable to copy file
"...\xxx.dll" to "...". The process cannot access ...

Does anyone knows what is going on? How can I explicitly release these files?

Your help is greatly appreciated.

I have a workaround for this problem:

Instead of loading the assemblies from the files directly, I open a
FileStream and read the contents of an assembly file into a byte array and