Move ListBox selected Items to another ListBox in ASP.NET CSharp (C#)

Assume you have two  ListBoxes ListBox1 and ListBox2 in your ASP.NET application. You like to move selected items from ListBox1 to ListBox2. Usee the below code.

if (ListBox.Items.Count > 0 && ListBox.SelectedItem != null)  
{  
    while (ListBox.Items.Count > 0 && ListBox.SelectedItem != null)  
    {  
        ListItem selectedItem = new ListItem();  
        selectedItem = ListBox.SelectedItem;  
        selectedItem.Selected = false;  
        ListBox2.Items.Add(selectedItem);  
        ListBox1.Items.Remove(selectedItem);  
    }  
}  

you can move multiple items by selecting multiple items in list box. To do that you have to set the ListBox "SelectionMode" properties to "Multiple"