joaofroes,
I tried this as an example:
lstMemoria.ListItems.Add 1, , String(90000000, "0")
It puts 90,000,000 characters "0" into the first item and displays as many of them as my form allows.
At the immediate window, I checked the length of this item's text; it was 90,000,000.
How many characters your textto parameter consumes?
vladk