.Net 6 MVC EF6 IActionResult returned null

Question

I am working on a character sheet repository with a username and login. Currently the users are not setup but the Character table is a List within the User. The Character list displays properly based on the UserId but when I try to enter the character's detail page it returns null unless I hardcode the id.

View action to Detail:

@foreach(Character character in @Model.Characters)
{
    <div class="form-control">
        <a class="list-group-btn list-group-item-action d-flex gap-3 py-3" aria-current="true" asp-controller="FifthEd" asp-action="CharDetail">       
            <div class="d-flex gap-2 w-100 justify-content-between">
                <div>

Actions:
Controller : Repository

            public async Task<IActionResult> CharDetail(int id)
            {
                //id = 1;
                Character character = await _userRepository.GetCharacter(id);
                return View(character);
            }

Repository:

            public async Task<Character> GetCharacter(int id)
            {
                return await _context.Characters.FirstOrDefaultAsync(c => c.Id == id);
            }

Answer 1

Hi anonymous user,

Ok, I was able to add @azzedinehtmlsql .ActionLink("Character Detail", "CharDetail", new { id = @character.Id }) to get it to work but it breaks the original button.

Is there something I can add to <a class="list-group-btn list-group-item-action d-flex gap-3 py-3" aria-current="true" asp-controller="FifthEd" asp-action="CharDetail"> to achieve the same result?

You can use the asp-route-{value} attribute to add the parameter, like this (the controller name is "FifthEd" and action name is "CharDetail"):

 <a class="list-group-btn list-group-item-action d-flex gap-3 py-3" aria-current="true" asp-controller="FifthEd" asp-action="CharDetail" asp-route-id="@character.Id">Character Detail</a>  

it is same with the following Html helper:

@Html.ActionLink("Character Detail", "CharDetail", "FifthEd" , new { id = @character.Id })  

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Best regards,
Dillion