MVC navigation menu Highlighting implementation ideas

The code is not written by me, but has been personally tested, according to my understanding of the comments written, the wrong place everyone commented that

@{@* This is to format the current route value and save it to the Currentcontroller variable, which is formatted as controller->action, if your navigation menu points to a path that is in a cont Under Roller, it is entirely possible to dispense controller *@ var currentcontroller = string. Format ("[{0}->{1}]", viewcontext.routedata.values["Controller"]. ToString (), viewcontext.routedata.values["action"].        ToString ());        The @*helper syntax allows you to easily create reusable helper methods in a view template to encapsulate some of the functions that are responsible for outputting to the page here is a helper to construct a helper method to get the style of the navigation menu item *@ @helper MenuItem (String curcontrollername, String allowedcontrolnames) {@ (Html.raw (allowedcontrolnames.in Dexof (Curcontrollername, stringcomparison.invariantcultureignorecase)! =-1? "TT3": "))}<ul>@* Apply the MenuItem Help method to get the style of the current menu *@<Liclass= "@MenuItem (Currentcontroller,"[home->Companyintroduction] "><ahref= "@Url. Action ("Controller "," Actioin ")">Menu 1</a></Li>            <Liclass= "@MenuItem (Currentcontroller,"[lottery->Trends] "TT2" ><ahref= "@Url. Action ("Controller "," Action ")">Menu 2</a></Li><binclass= "@MenuItem (Currentcontroller,"[lottery->Trends] "><ahref= "@Url. Action ("Controller "," Action ")"> Menu 3</a></Li>            <binclass= "@MenuItem (Currentcontroller,"[lottery->Forecast] "TT2" ><ahref= "@Url. Action ("Controller "," Action ")"> Menu 4</a></Li>        </ul>