System.ComponentModel.DebugReflectPropertyDescriptor.GetDebugInvokee C# (CSharp) Method

        private static object GetDebugInvokee(Type componentClass, object component) {

            // We delve into the component's designer only if it is a component and if
            // the component we've been handed is not an instance of this property type.
            //
            if (!componentClass.IsInstanceOfType(component) && component is IComponent) {
                ISite site = ((IComponent)component).Site;
                if (site != null && site.DesignMode) {
                    IDesignerHost host = (IDesignerHost)site.GetService(typeof(IDesignerHost));
                    if (host != null) {
                        object designer = host.GetDesigner((IComponent)component);

                        // We only use the designer if it has a compatible class.  If we
                        // got here, we're probably hosed because the user just passed in
                        // an object that this PropertyDescriptor can't munch on, but it's
                        // clearer to use that object instance instead of it's designer.
                        //
                        if (designer != null && componentClass.IsInstanceOfType(designer)) {
                            component = designer;
                        }
                    }
                }
            }

            Debug.Assert(component != null, "Attempt to invoke on null component");
            return component;
        }