CheckComboBox : How to prevent a combobox from closing after a selection is clicked?

Question

I\'ve got a combobox and it\'s populated with a bunch of checkboxes. I wish the user to be able to click multiple times before the combobox closes (or is closed by the user

Answer 1

Using Exapander Control you can achieve multple item selection without closing popup after single selection.

For understanding please run this code separately.

xaml

c# code

  public partial class Window1 : Window
{
    public Window1()
    {
        InitializeComponent();          
        ObservableCollection custdata = new ObservableCollection();
        custdata.Add(new Customer() { ContentData = "content1" });
        custdata.Add(new Customer() { ContentData = "content2" });
        custdata.Add(new Customer() { ContentData = "content3" });
        custdata.Add(new Customer() { ContentData = "content4" });
        custdata.Add(new Customer() { ContentData = "content5" });
        custdata.Add(new Customer() { ContentData = "content6" });
        lst.ItemsSource = custdata;
    }
}
public class Customer
{
    public string ContentData { get; set; }
}

Result