As a beginner, although I already read through the wix tutorial, still
have some questions on guid attribute on component element:

1. same guid in different product:

if I accidentally copied a guid from a component in product A to another
component in product B. What happened if I install product B after
product A is installed, does msi will rollback since there is same guid
in different product ?

2. same component in same product but in different version

Assuming in product 1.1, I have a component which contains foo.exe. Then
when product 1.2 is released, I still have a component which contains
foo.exe, but foo.exe is updated, e.g. different from the one in 1.1, so

2.1 shall I use different guid for this component if I change the
Version attribute of product ?

2.2 shall I use same guid for this component if I does not change the
Version attribute of product ?

3. dynamically generate guid for same component in same product in same
version

Can I dynamically generate guid for every component in build, which
means my build script will dynamically create guid for each component,
in this way, every time I build my msi, every component will get
different guid from last time, is that OK or bad practice ?

Best Regards
Jason


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