ListView cancel SelectedIndexChanged

[AndyMC]

I would like to cancel the SelectedIndexChanged event if a validation fails.

As there is no event that I can cancel I have to write a workaround that sets the selected item back to the (remembered) old selected item if the validation fails (see code below).

It works so far as that I can set back the selection to the old item but in my GUI the new selected item (that I don't want to be selected) is still selected and the old one (that I selected "manually") is not being selected.

Can anyone help?
Thanks in advance
Andy

Private Sub ctlSortableListView_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.SelectedIndexChanged
        Dim newSelectedIndex As Integer
        Dim cancel As Boolean

        newSelectedIndex = SelectedItemIndex

        RaiseEvent SelectedItemChanged(cancel, mOldSelectedIndex, newSelectedIndex)
        If cancel = True Then
            Me.Items(newSelectedIndex).Selected = False
            Me.Items(mOldSelectedIndex).Selected = True ' set back to old value, if canceled outside.
            ' This doesn't work. The selection is being changed (internally) but still the "newSelectedIndex" row seems to be selected (in the GUI) and not the "oldSelectedIndex" row.
            ' This seems to be a bug in the listView control!?
        Else
            mOldSelectedIndex = newSelectedIndex
        End If
        Me.Refresh()
    End Sub

    Protected Overrides Sub OnSelectedIndexChanged(ByVal e As System.EventArgs)
        Dim newSelectedIndex As Integer
        newSelectedIndex = SelectedItemIndex
        If newSelectedIndex <> mOldSelectedIndex And newSelectedIndex > -1 Then 'only raise event, when selection really changed
            ctlSortableListView_SelectedIndexChanged(Me, e)
        End If
    End Sub

 

[hellojunk007]

I don't know if you are still looking for an answer. But if you are, this might help (doesn't work with keyboard navigation).

    Private Sub ListView1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListView1.Click
        If ListView1.SelectedIndices.Count = 0 Then
            Exit Sub
        End If

        'Check if it's the same item that's clicked again.
        If selectedIndex = ListView1.SelectedIndices.Item(0) Then
            Exit Sub
        End If

	'Do the validation
        If valid() Then
            selectedIndex = ListView1.SelectedIndices.Item(0)
        Else
            ListView1.Items(selectedIndex).Selected = True
            ListView1.EnsureVisible(selectedIndex)
        End If
    End Sub