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<%@ Page Language="vb" Explicit="true" Strict="true" %>

    Public Sub Verify(sender As Object, e As EventArgs)
        Dim lstItem As ListItem
        If CountryListBox.SelectedIndex <> -1 Then
            OutputLabel.Text = "You selected: "
            If CountryListBox.SelectionMode = ListSelectionMode.Single Then
                OutputLabel.Text += "" & CountryListBox.SelectedItem.Text & ""
            Else
                For Each lstItem In CountryListBox.Items
                    If lstItem.Selected Then
                        OutputLabel.Text += "" & lstItem.Text & ", "
                    End If
                Next
            End If
        Else
            OutputLabel.Text = "You didn't selected any country!"
        End If
    End Sub


  
    
  
  
    
      
        United States
        United Kingdom
        China
        India