CODEWITHSUNDEEP
vb.net
Todd432
Todd432

Reputation: 79

Deleting multiple or single items from list box

I have created a list box and at the moment I am trying to make it such that you can delete one item or multiple items using this code:

Private Sub Delbtn_Click(ByVal sender As Object, 
        ByVal e As System.EventArgs) Handles Delbtn.Click
    lstCountries.Items.Remove(lstCountries.SelectedItem)
    lstCountries.Items.Remove(lstCountries.SelectedItems)

End Sub

However when using this I am not able to delete more than one selection at a time. What is the best way to make it so that I can delete one or more than one selection?

Upvotes: 1

Views: 4059

Answers (1)

Ňɏssa Pøngjǣrdenlarp
Ňɏssa Pøngjǣrdenlarp

Reputation: 38865

First, make sure there are some things selected:

If lstCountries.SelectedItems.Count > 0 Then

    ' MUST loop backwards thru collections when removing
    ' or you will remove the wrong things, miss stuff and
    ' run out early
    For n As Integer = lstCountries.SelectedItems.Count - 1 To 0 Step -1
        ' remove the current selected item from items
        lstCountries.Items.Remove(lstCountries.SelectedItems(n))
    Next n
End if

There is also a SelectedIndicies Collection which would return a collection of integers of the items. If you iterate that, use .RemoveAt() but you still need to loop backwards.

Upvotes: 2

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