Calling validating event in a loop through controls

[Bryan]

Visual basic 2005, .net 2.0:

I pass my form's collection of controls to a public sub in a module
that loops through and checks for any ErrorProvider text. The sub
returns all the ErrorProvider strings that were found for display in a
msgbox to let the user know that there were data errors found. This
works great, however, sometimes a user does not ever enter a certain
control, therefore that control's validating event is never called, so
my Error collecting sub will not return anything for this control. I
need to be able to loop through all controls on a form and call each
control's validating event. I need this code to be reusable for
multiple forms. Any suggestions.