Starting an Application

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I am storing application data as a byte array in my database. In this case
the application is a Media Player file of the form c:\medialfiles\file1.wmv.
I guess the question could also apply to application files of form .doc or
..xls, etc. What I would like to know is that when I recover the byte array
from my server containing the serialized file contents, do I have to stream
back to a file on disk to enable the parent application to run it or can I
somehow avoid disk operation and activate the application form the file
contents in memory in the form of a memorystream or some other in memory
format. Can I avoid having to stream my application file back to disk and
still have my parent application load it?

Thanks,
Fred Herring
.

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