System.Windows.Controls.ComboBox.OnMouseLeftButtonDown C# (CSharp) Method

		protected override void OnMouseLeftButtonDown (MouseButtonEventArgs e)
		{
			base.OnMouseLeftButtonDown (e);
			if (!e.Handled) {
				e.Handled = true;
				IsSelectionActive = true;
				IsDropDownOpen = !IsDropDownOpen;
			}
		}