How can I code a button which will allow the user
to select/deselect all entries in a multiselect listbox,
please?

Currently Textbox1 instructs the user to use the left
mouse button to highlight their chosen sheets,
Listbox1 contains the sheet names, and Command
Button1 = "Click when done".

I'm hoping that when a book contains many sheets,
user could select all then just left click with mouse to
deselect specific sheets.

Is this possible, please?

Regards.





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