action link with no white spaces in the route

Im triying for a while build an action link with a desire route:

I have this action link:

  @Html.ActionLink(" Continue Reading",                                                  // linkText"PostComplete",                                    // actionName"Posts",                                                   // controllerName
                    new
                    {                                                     // routeValues
                        id= Model.Id,
                        title = Model.Title.Trim()
                    }
                    ,
                    new { @class = "readmore" }                                                      // htmlAttributes
                                                                                                     // htmlAttributes
                    )

who call this controller:

[Route("posts/{title}")]
        public IActionResult PostComplete(long id)
        {
            var post = _dataContext.Posts.SingleOrDefault(
                x => x.Id == id);

            return View(post);

        }

the path when I click in the action link is:

 http://localhost/posts/Learning%20it%20test?id=1 ,I have "trim()" in the link so I dont know why it still have the %20 whitespace (also tried with .Replace(" ","")) , I also dont want the id there, I dont even understand why it is showing the id if I just have /posts/{title} in the route

I want something like:

http://localhost/posts/Learningittest