Project Code
Public Class Form1
Private Sub UpPictureBox_Click(sender As System.Object, e As System.EventArgs) Handles UpPictureBox.Click
If CityListBox.SelectedIndex = -1 Then
MessageBox.Show("Select an item to move", "No item selected", MessageBoxButtons.OK, MessageBoxIcon.Error)
Else
Dim newIndex As Integer = CityListBox.SelectedIndex - 1
If newIndex < 0 Then
Return
End If
Dim selectedItem As Object = CityListBox.SelectedItem
CityListBox.Items.Remove(selectedItem)
CityListBox.Items.Insert(newIndex, selectedItem)
CityListBox.SetSelected(newIndex, True)
End If
End Sub
Private Sub DownPictureBox_Click(sender As System.Object, e As System.EventArgs) Handles DownPictureBox.Click
If CityListBox.SelectedIndex = -1 Then
MessageBox.Show("Select an item to move", "No item selected", MessageBoxButtons.OK, MessageBoxIcon.Error)
Else
Dim newIndex As Integer = CityListBox.SelectedIndex + 1
If newIndex >= CityListBox.Items.Count Then
Return
End If
Dim selectedItem As Object = CityListBox.SelectedItem
CityListBox.Items.Remove(selectedItem)
CityListBox.Items.Insert(newIndex, selectedItem)
CityListBox.SetSelected(newIndex, True)
End If
End Sub
End Class
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