Edit action in controller not updating - asp.net-mvc

Question

When I edit an item and return to the index view the item doesn't show what I updated it to.
I think I know what the problem is but not sure how to fix it. In my service class I have a CreateEditItem method and when I step thru the code it hits the if condition <=0. So it acts like there is an id of 0 when I click the submit button to submit my update. I'm not sure what to do to fix this. Do I need to have a separate method for Edit? And if so what should that look like?
public bool CreateEditItem(Item item)
{
if (item.ItemId <= 0)
{
var maxId = _mockList.Max(p => p.ItemId);
item.ItemId = maxId + 1;
_mockList.Add(item);
return true;
}
var itemToEdit = _mockList.FirstOrDefault(p => p.ItemId ==
item.ItemId);
itemToEdit = item;
return true;
}
Action in Controller
[HttpPost]
public IActionResult EditItem(Item itemToEdit)
{
_itemService.CreateEditItem(itemToEdit);
return RedirectToAction(nameof(Index), new { id =
itemToEdit.ItemId });
}
View:
<div class="row">
<form asp-action="EditItem">
<div asp-validation-summary="ModelOnly" class="text-
danger"></div>
<div class="container form-group">
<div class="row">
<div class="col-md-2">As Of : <label
for="AsOf" /></div>
<div class="col-md-4"><input id="AsOf"
value="#Model.ItemToEdit.AsOf" name="AsOf" type="date" /></div>
</div>
<br />
<div class="row">
<div class="col-md-2">Title Summary : <label
for="TitleSummary" /></div>
<div class="col-md-2"><input id="TitleSummary"
value="#Model.ItemToEdit.Title" name="Title" type="text" /></div>
</div>
<br />
<br />
<div class="row">
<div class="col-md-2"><input type="submit"
value="Submit" class="btn btn-primary" /></div>
</div>
</div>
</form>
</div>
I expect when I click the submit button to submit my update it will show the updated Title and/or AsOf date.

Answer 1

change your method from HTTPut to HttpPost
it will work.