Private Sub btnadd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnadd.Click
       ListBox1.Items.Add(TextBox1.Text)
   End Sub


   Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)

   End Sub

   Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnclear.Click
       TextBox1.Clear()
   End Sub


   Private Sub Butnedit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnedit.Click
[b] EL CODIGO QUE VA AQUI NO LO SE, NO LO UBICO[/b]
   End Sub

   Private Sub btnremove_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnremove.Click
       ListBox1.Items.Remove(ListBox1.Text)
   End Sub

   Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged

   End Sub

   Private Sub btnexit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnexit.Click
       Me.Close()
   End Sub

   Private Sub AgregarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AgregarToolStripMenuItem.Click
       ListBox1.Items.Add(TextBox1.Text)
   End Sub

   Private Sub LimpiarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LimpiarToolStripMenuItem.Click
       TextBox1.Clear()
   End Sub

  [B] Private Sub EditarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles EditarToolStripMenuItem.Click
   
   End Sub

   Private Sub BorrarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BorrarToolStripMenuItem.Click
       ListBox1.Items.Remove(ListBox1.Text)
   End Sub

   Private Sub SalirToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SalirToolStripMenuItem.Click
       Me.Close()
   End Sub
End Class

Private Sub btnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEdit.Click
 ListBox1.Items.Remove(ListBox1.Text) 'Elimina el item seleccionado
 ListBox1.Items.Add(TextBox1.Text) 'Agrega el nuevo item
End Sub