Creates an array of components when the toolbox item is invoked.
host The designer host to use when creating components.defaultValues A dictionary of property name/value pairs of default values with which to initialize the component.
An array of created System.ComponentModel.IComponent objects.
If host is not null, the ToolboxItem.CreateComponentsCore(System.ComponentModel.Design.IDesignerHost, IDictionary) method adds the new components to the designer.