how can i simplify url in .NET MVC?

You can do this by following methods

Method 1:

1. Go to App_Start folder then RouteConfig.Cs  file 

2. Add new Route in it , like this

routes.MapRoute(
name:"UniqueRouteName",
Url:"{controller}/{action}/{id}",//this is url pattern which we want, in your case it would be "/Edit/Edit/12"
defaults:new{controller="Edit",action="Edit",id=UrlParameter.Optional}
);

3. Build your solution and you are done.

Note: This Should be placed before Default routing

Method 2:

1. Open controller[Edit] file.
2. Go to ActionMethod for which you want routing
3. Add a route attribute, something like this
   
   

   [Route(“Edit/{id:int}”)]
   public ActionResult Edit(int id)
   {
    //do something
    return View();
   }
   ?

4. To Enable attribute routing you need to go RouteConfig.cs and add this code in RegisterRoute Method
   
   

   routes.MapMvcAttributeRoutes();?

5. Build and run your code.

That's it, hope this helps