Route to a POST method with model and id

Question

I want to pass in two Ids to my method. The method is called DeleteAttendee and is on my SessionController in the Training area.

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult DeleteAttendee(int sessId, int attId)

I have created a link to get there that takes you to https://localhost:<port>/Training/Session/DeleteAttendee?sessId=1&attId=3.

<a asp-action="DeleteAttendee" asp-route-attId="@item.Attendee.Id" asp-route-sessId="@Model.Id">Delete</a>

Using the default routing, this page can't be found. What do I need to change or set up to route to this method?

Edit: Apparently the problem is that the link is performing a GET, but I need it to POST. How do I change it?

I think you can accomplish what I want to do with a button control. It will actually work better for me now if I can pass in the model and a specific id. I tried the button below. It looks correct in the markup, but the id keeps getting replaced with the sessionId when the button is clicked.

<button formaction="/Training/Session/DeleteAttendee/@item.Id" formmethod="post">Edit</button>

Answer 1

I ended up using a submit button that calls javascript and added the value to the viewmodel to get this done.

On the page:

<input type="hidden" asp-for="SelectedAttendeeId" />
<input type="button" onclick="DeleteAttendee(@item.Id)" value="E" />

In javascript:

function DeleteAttendee(attendeeId) {
  var selectedAtt = $('#SelectedAttendeeId');
  selectedAtt.val(attendeeId);
  var model = $('#frmSession').serialize();
  $.post('/Training/Session/DeleteAttendee', model, function (data) {
    // success logic here
  });
}