Using VB6 I want to pop up a message box that warns of duplicate data in a listbox.
For example, I have a listbox with the following items in the list:
I need to be able to detect any duplicate extensions including the underscore; the extensions are either an underscore and one letter, or an underscore and two letters. I need to detect the duplicate occurrence of the _RD and the _X in this list and popup a MsgBox that says "Duplicate data extensions detected". Thanks for any help.
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