how to add default parameters to attribute routes in asp.net mvc

Question

I am trying to change this convention based route:

routes.MapRoute(
    \"MovieByReleaseDate\",
    \"movies/released/{year}/{month}\",
    new { controller          


        

Answer 1

You can use multiple [Route] attributes coupled with nullable parameters to achieve your goal.

[HttpGet]
[Route("movies/released/")]
[Route("movies/released/{year}")]
[Route("movies/released/{year}/{month}")]
public string Test(int? year = 2018, int? month = 1)
{
    return "The year is " + year;
}

When you send a request to movies/released without a year, the default value is used for the year. When you send a request to movies/released/2000, the URL parameter overrides the default value.