I have a Groupbox control on my form in which I have about 8 checkbox controls. One of the checkboxes, if checked, will make the rest of the checkboxes become checked. I have the following code that isn't working.
Code:
                For Each ctl As Control In gb1.Container.Components
                    If TypeOf (ctl) Is CheckBox Then
                        ctl.Checked = True   'Isn't working  
                    End If
                Next
With what I have above, "Checked" isn't a property of the "ctl". What am I doing wrong in this construct?

Thanks,