Atomic file copy under .NET

Question

I am building a server app that copies files using System.IO.File.Copy(...) function. My files can be rather large, therefore, it has a fair chance that if the machine crash

Answer 1

Other have suggested transactional NTFS which is fine if you're deploying on Vista or later. If you need to support XP (or earlier) then temporary file followed by a move (rename) is the best solution.

The answer to this similar question provides more info: Atomicity of File.Move