Wix Installation Directory Customization - wix

Question

i have following condition for wix installer:
- Starting Installer directory for install should be RootDirectory\ApplicationName [C:\MYApplication]
- User should able to customize this path (using pathedit or any textbox )
I've done following code but problem is half of installation is done at specified path and half of folder is copied in the root directory.
<Fragment>
<Property Id="_BrowseProperty" Value="INSTALLDIR" Secure="yes"/>
<CustomAction Id="SetDataLocationDefault" Property="INSTALLDIR" Value="[WindowsVolume]$(var.Title)\" />
<InstallUISequence>
<Custom Action="SetDataLocationDefault" After="CostFinalize" />
</InstallUISequence>
<InstallExecuteSequence>
<Custom Action="SetDataLocationDefault" After="CostFinalize" />
</InstallExecuteSequence>
<Directory Id="TARGETDIR" Name="SourceDir">
<Directory Id="INSTALLDIR" Name="$(var.Title)">
<Directory Id="ProgramMenuFolder">
<Directory Id="ApplicationProgramsFolder" Name="$(var.Title)"/>
</Directory>
</Directory>
<Directory Id="DesktopFolder"/>
</Directory>
Another file for the component includes
<Fragment>
<ComponentGroup Id="ProductInstallComponent">
<ComponentRef Id="EXEPackage" />
<ComponentRef Id="ProjectsOutput" />
<ComponentRef Id="TempReports" />
<ComponentRef Id="Help" />
<ComponentRef Id="ApplicationShortcut" />
<ComponentRef Id="ApplicationDeskShortcutComp" />
</ComponentGroup>
in the case Help Files and Report Files are created at the rootlocation. so how can i change that?

Answer 1

AFAIK such an action has to be set before the CostFinalize-action, as afterwards all the directories are set and unmutable. Also set it in both sequences, as you already did in the example above. I.e. it should be the following:
<InstallUISequence>
<Custom Action="SetDataLocationDefault" Before="CostFinalize" />
</InstallUISequence>
<InstallExecuteSequence>
<Custom Action="SetDataLocationDefault" Before="CostFinalize" />
</InstallExecuteSequence>