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Thread: Addition in VB

  1. Dec 2nd, 2003, 02:13 PM #1
    JohnMacintosh
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    Thumbs up Addition in VB

    Hi , im having trouble with addition in VB.NET 2003

    I have a listbox which the user inputs a variety of numbers, in the form (minutes.seconds) so, (24.32)

    I am looking for some code/tips/help that adds the total in the listbox, continually updating the total.

    Eg. User Adds 22.32

    Total = 22.32

    User Adds 21.12

    Total = 43.44 e.t.c

    Thanks !
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  2. Dec 2nd, 2003, 05:41 PM #2
    Carnifex
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    Unfortunately there doesn't seem to be an event relating to when the number of items changes in a listbox, but you could create your own. Raise the event whenever you clear the listbox, add an item to the listbox, or remove one.

    When you handle the event, just use a private variable that keeps track of the current tally, and add/subtract from it accordingly.
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