Winforms — multi select dropdown list

Question

I\'m shopping around for a dropdown list control that allows me to select multiple items. Something akin to the CheckedListbox, but in dropdown list form (I don\'t want it

Answer 1

You should Show again the dropdown Form, because the code below closes it.

The code that Works is:

protected override void OnClick(EventArgs e)
{
        base.OnClick(e);
        this.Parent.Focus();
        this.dropDown.Show(this);
}