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Thread: multiple deletion for listbox

  1. #1
    Join Date
    May 2002
    Posts
    13

    Question multiple deletion for listbox

    Hi,
    I have two listboxes A and B, need to get data from A to B. Now, I can multiselect from A, but can't multi delete from B.
    I don't need to move B back to A, just need to delete data when user choose more than one in B.
    Any suggestion?
    Thanks.
    Brad

  2. #2
    Join Date
    Jun 2002
    Location
    Lyman ME - USA | Oneonta NY - USA
    Posts
    399
    i think the reason would be is because when you delete something from a list it has to make the necessary changes to the list, aka delete then move the rest of the items after it up a level. So if it were allowed to multidelete it would have to just do a loop of it's own to make those deletions...so it wuld be best for you to just run a loop

    for intI = o to ListA.Listcount -1
    if listA.List(intI) = ListA.Selected then
    for intJ = 0 to ListB.listcount -1
    if listB.List(intJ) = ListA.List(intI) then listB.Remove(intJ)
    next intJ
    end if
    next intI

    something like that should work...but maybe someone has a better example or idea

    hope this helps

    - nc
    "In a world without walls and barriers, what need is there for windows and gates!" - a mac ad
    "What was the best thing before sliced bread and when did sliced bread go out of existence?" - me
    "Software is like sex, it's better when it's free." - Linus Torvalds <- gotten from Andreas Masur


    Live Penguine! - Tux the linux mascot
    Vivez le penguine!, íViva en penguine!, Lang lebe der Pinguin!, Viva no penguine!, Viva sul penguine!

  3. #3
    You mean you are multi selecting some items in ListBoxB and want to delete them right?

    Code:
    Dim intSelNum as Integer
    Dim I as Integer
    Dim intRemNum as Integer
    Dim intLstCount as Integer
    intSelNum = ListB.SelCount
    intRemNum = 0
    intLstCount = ListB.ListCount - 1
    For I = 0 To intLstCount
         If ListB.Selected(I) = True Then
              ListB.RemoveItem(I)
              intRemNum = intRemNum + 1
              If intRemNum = intSelNum Then Exit For    'This keeps it from having errors because your taking one away from the list each time.
         End If
    Next
    That will remove all selected items from a list.

  4. #4
    Join Date
    Jun 2002
    Location
    Lyman ME - USA | Oneonta NY - USA
    Posts
    399
    Originally posted by StevenHickerson
    'This keeps it from having errors because your taking one
    this is what i was talking about. You need to go one at a time...

    sorry if the code is crappy...but i just put it together off the top of my head...

    - nc
    "In a world without walls and barriers, what need is there for windows and gates!" - a mac ad
    "What was the best thing before sliced bread and when did sliced bread go out of existence?" - me
    "Software is like sex, it's better when it's free." - Linus Torvalds <- gotten from Andreas Masur


    Live Penguine! - Tux the linux mascot
    Vivez le penguine!, íViva en penguine!, Lang lebe der Pinguin!, Viva no penguine!, Viva sul penguine!

  5. #5
    Join Date
    Sep 2001
    Location
    IL, USA
    Posts
    1,090
    'The following code should delete all selected items from ListB
    Code:
    Private Sub Command1_Click()
       Dim ind As Integer
       ind = 0
       Do While ListB.SelCount > 0
          If ListB.Selected(ind) Then
             ListB.RemoveItem (ind)
             ind = ind - 1
          End If
          ind = ind + 1
       Loop
    End Sub

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