如何根据他的ID将超链接放置到另一个页面？

Question

I'm new to ASP.NET MVC and I'm stuck in here. I want to create a hyperlink, so that when I click in the movie name, it goes to a details page, with the details on it. I already have the @HTML.ActionLink to a Details class in the controller, but now I don't know what to put in the Details class. Should I create a variable to the class Index to make comparisons?

This is the action method Index :

public ActionResult Index()
{
        PAPEntities db = new PAPEntities();

        MovieViewModel[] movies = db.MoviesData.Select(movie => new MovieViewModel
        {
            MovieID = movie.MovieID,
            MovieName = movie.MovieName,
            MovieDescription = movie.MovieDescription,
            MovieCategory = movie.MovieCategory,
            MovieYear = movie.MovieYear
        }).ToArray();

        return View(movies);
}

This is the part of the Index with the @HTML.ActionLink:

@foreach (var item in Model)
    {
        <tr>
            <td>@Html.ActionLink(item.MovieName, "Details", "Movies", new { id = item.MovieID }, null)</td>
            <td>@item.MovieCategory</td>
            <td>@item.MovieYear
            <td>@item.MoviePrice</td>
        </tr>
    }
</table>

I tried to search for it, but nothing similar appears, so I'm kinda stuck

Answer 1

I assume you're using asp.net core? if so you should be using Tag Helpers

Add the following in the _ViewImports.cshtml

@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers

Then the following in your page

<a id="btn" asp-controller="Movies" asp-action="Details" asp-route-id="@item.MovieID">@item.MovieName</a>

Answer 2

I think you are confusing class and method .
The code you posted is the method Index on the class (I guess) MoviesController .
This line

<td>@Html.ActionLink(item.MovieName, "Details", "Movies", new { id = item.MovieID }, null)</td>

creates a link to the action Details in the controller Movies , passing an id to it.

So you need in your class MoviesController the method Details having a parameter called id to get it and use it.

public class MoviesController: Controller
{
    // code of other methods

    public ActionResult Details(int id)
    {
        // get details of movie with id
    }
}

---

Side note: if your using ActionLink in a view returned by the Movies controller, you don't need to specify the controller again so you can write

@Html.ActionLink(item.MovieName, "Details", new { id = item.MovieID })

and it will do the same.

Answer 3

If the @Html.ActionLink is meant to hit the Details method of the Movies controller, and you say that:

I already have the @HTML.ActionLink to a Details class in the controller, but now I dont know what to put in the Details class

For that I would suggest to add a method 'Details' like this in the 'Movies' controller:

public ActionResult Details(string id)   // might be 'int' if your MovieId is of integer type
{
    //use LINQ to fetch the movie based on input 'id'

    //return the information with the 'details' view as you did with the 'Index' method
}

Hope I have got your question correctly.