For some reason, I can't get my filter to work when I call the
CommonDialog1.ShowOpen function. I've set my filter to search for *.dat
files. The Open dialog box opens but still lists all the files in the
directory. It does not filter out the *.dat files.

I've used the AppWizard to create a SDI application. Is the CommonDialog
inheriting settings that are overiding my specified settings?

This seems like a small problem with a simple solution but I am stumped. Can
someone please offer advice?

Thanks,

-Allan

Try this

    With Me.CommonDialog1
        .Filter = "Dat Files (*.dat)|*.dat|Datfiles (*.dat)|*.dat"
        .ShowOpen
    End With

Krgrds,
Perry