Can we get multiple values ​​from select tag via Ajax script in asp.net MVC controller?

Yes, you can create a multi-selection like this:

<select multiple="multiple" name="cars">
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>

      

        
        
        
      

    

And your controller action should look something like this:

    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Index(string[] cars)
    {
        // ....
        return View();
    }

      

        
        
        
      

    

The ajax post codecan will be the same as in your previous case.