Option strict On Vs. Checklistbox.items Vs. Late Binding

Asked Dec 18 '21 at 13:48

Active Dec 18 '21 at 13:48

Viewed 52 times

I have a databinded checklistbox:

    With Me.chkChaineSelected
            .DataSource = dtChainesTvRadio
            .DisplayMember = "Chaînes TV/RADIO"
    End With

To get the items checked, i use a loop:

Dim strSelectedLinkeChaine Aa String
For i As Integer = 0 To (chkChaineSelected.Items.Count - 1)
   If chkChaineSelected.GetItemChecked(i) Then
      strSelectedLinkeChaine = DirectCast(Me.chkChaineSelected.Items(i)("Chaînes TV/RADIO"), String)
   End If
Next

But this doesn't work with Option Strict On, the issue is late binding (BC30574) located on Me.chkChaineSelected.Items(i)

asked Dec 18 '21 at 13:48

8oris

Syntax errors tend to generate confusing error messages. It is not a multi-dimensional array, use plain Items(i) – Hans Passant Dec 18 '21 at 13:58
Thanks but sorry but..how do i use plain items(i)? (i don't know what is plain Item?) – 8oris Dec 18 '21 at 14:16
Nope, doesn't work. I got "System.InvalidCastException : 'Unable to cast object of type 'System.Data.DataRowView' to type 'System.String'.'" – 8oris Dec 18 '21 at 15:12
3

DirectCast(Me.chkChaineSelected.Items(i), DataRowView)("Chaînes TV/RADIO") – Hans Passant Dec 18 '21 at 15:39
1

.... and call `.ToString()` – dr.null Dec 18 '21 at 15:44
1

Thank you Hans Passant and dr.null, ```DirectCast(Me.chkChaineSelected.Items(i), DataRowView)("Chaînes TV/RADIO").ToString``` works. – 8oris Dec 18 '21 at 15:46

Option strict On Vs. Checklistbox.items Vs. Late Binding

0 Answers0