[WiX-users] How to get file's parent folder?

[Robert G. <gol...@go...>]

Hello all,

I have a problem to find file's parent folder - in Orca, it's not a problem
using AppSearch/DrLocator/Signature tables, but I failed to achieve this in
WiX. 

When I use:

<Property Id="APPDIR">
  <DirectorySearch Id="DIRSig" Depth="5">
    <FileSearch Name="App.exe" MinVersion="3.0" MaxVersion="3.9" />
  </DirectorySearch>
</Property>
 
property APPDIR will contain full path to the App.exe, e.g. "C:\Program
Files\AppFolder\App.exe", but I need to have in this property only the
folder "C:\Program Files\AppFolder".

I started to love WiX, I spend already many hours finding this solution.

Please, can anyone help?