> For the complete documentation index, see [llms.txt](https://jen-hsuan-hsieh.gitbook.io/asp-net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jen-hsuan-hsieh.gitbook.io/asp-net/chapter1/1.1.the-complete-asp.net-mvc-5-course/14building-forms/145edit-form.md).

# 1.4.5.Edit form

* Create an edit action in controller 

```
        public ActionResult Edit(int id)
        {
            var customer = _context.Customers.SingleOrDefault(c => c.Id == id);

            if (customer == null)
            {
                return HttpNotFound();
            }
            var viewModel = new CustomerFormViewModel
            {
                customer = customer,
                MembershipTypes = _context.membershipType.ToList()
            };

            return View("CustomerForm", viewModel);
        }
```