<% Html.Obout(new ListBox("ListBox1")
    {   
        SelectedIndex = 2,
        SelectionMode = ListBoxSelectionMode.Single
        }); %> 

    <% Html.Obout(new ListBox("ListBox2")
    {   
        SelectedValue = "ALFKI"        
        SelectionMode = ListBoxSelectionMode.Single
        }); %>  

    <% Html.Obout(new ListBox("ListBox3")
    {   
        SelectionMode = ListBoxSelectionMode.Single
        }); %>  
    
    

    @Html.Obout(new ListBox("ListBox1")
    {   
        SelectedIndex = 2,
        SelectionMode = ListBoxSelectionMode.Single
    })

    @Html.Obout(new ListBox("ListBox2")
    {   
        SelectedValue = "ALFKI"        
        SelectionMode = ListBoxSelectionMode.Single
    })

    @Html.Obout(new ListBox("ListBox3")
    {   
        SelectionMode = ListBoxSelectionMode.Single
    })
    
    

    public ViewResult SelectionSingleSet()
        {
            ViewData["ListBox1"] = GetCustomers();
            ViewData["ListBox2"] = GetCustomers();

            IEnumerable<ListBoxItem> dbItems = GetCustomers().Take(25);
            List<ListBoxItem> items = new List<ListBoxItem>();
            foreach (ListBoxItem tempItem in dbItems)
            {
                if (tempItem.Value == "AROUT")
                {
                    tempItem.Selected = true;
                }

                items.Add(tempItem);
            }

            ViewData["ListBox3"] = items;

            return View();
        }