Customizing the Behavior of the BrowseDlg in WiX to Use a Custom Dialog for Invalid Paths

[farahhadii]

I'm working on a Windows Installer project using the WiX Toolset version 4. I'm utilizing the BrowseDlg dialog to enable users to select the installation directory. My setup is defined using this wix UI: <ui:WixUI Id="InstallDir_SpecialDlg" InstallDirectory="INSTALLFOLDER" />

When a user selects an invalid directory (one that doesn't exist or meets certain criteria), I want to replace the default invalid directory warning dialog (InvalidDirDlg) that BrowseDlg triggers with my own custom dialog called ErrorDlg.

Below is the relevant part of my WiX XML configuration where InvalidDirDlg is triggered upon an invalid directory selection:

. I want to replace InvalidDirDlg with this custom dialog instead