Fluent.ComboBox.ComboBox C# (CSharp) Method

        static ComboBox()
        {
            Type type = typeof(ComboBox);
            ToolTipService.Attach(type);
            PopupService.Attach(type);
            ContextMenuService.Attach(type);
            DefaultStyleKeyProperty.OverrideMetadata(type, new FrameworkPropertyMetadata(type));
            SelectedItemProperty.OverrideMetadata(type, new FrameworkPropertyMetadata(OnSelectionItemChanged, CoerceSelectedItem));
        }