ansaurus

Question

ASP.NET MVC 2 Submitting a form and a parameter to controller action

Answer 1

A:

Bryce Fischer 2010-10-06 20:46:45

Answer 2

+1 A:

Your question is not very clear. A form already contains parameters that will be sent to the controller action. So as long as you include the id parameter either at the form action or inside the form, it's value will be sent.

Example as route parameter:

<% using (Html.BeginForm("Index", "Home", new { id = "123" })) { %>
    ...
<% } %>

And as input field:

<% using (Html.BeginForm("Index", "Home", FormMethod.Post)) { %>
    <%= Html.Hidden("id", "123") %>
<% } %>

Darin Dimitrov 2010-10-06 20:50:00

Ill try to elaborate. When the form is submitted by the search button, i want the id parameter on the controller action to be for example, 1. Whereas, when a dropdownlist change event occurs, i want it to be 0 (or null).

John Stuart 2010-10-06 20:52:03

When a dropdownlist event occurs, the form won't be submitted automatically. You need to submit it yourself. This means that you need to write javascript and subscribe to the change event of the dropdown. Then you could simply set the value of the hidden field to 0 before submitting the form.

Darin Dimitrov 2010-10-06 20:53:40

The top example you have, i thought the new{ id = "123"}} is setting the identification of the form, not the routing parameter. At least, in my code im using it as the identification for when i use JQuery to catch dropdownlist.change and button.submit events. Could you elaborate on how to use this?

John Stuart 2010-10-06 20:58:47

The top example sets the route parameter. It should generate something similar to this: `<form action="/Home/Index/123" method="post">` if you use default routing.

Darin Dimitrov 2010-10-06 21:00:57

So, if im using jquery or javascript how would i change the form's id when its being submitted?

John Stuart 2010-10-06 21:03:48

It's easier if you were using a hidden field. You could simply `$('#id').val('0');`. If you take the first example you will need to modify the `action` attribute of the form and replace the last part with `0`. The problem with this approach is that if you decide to later change your routing rules, javascript will break. That's why I would recommend you using a hidden field in this case. By default you could set it's value to 1 and when the dropdown changes you change to 0.

Darin Dimitrov 2010-10-06 21:06:33

Just got it working. You're a lifesaver!

John Stuart 2010-10-06 21:10:03

ansaurus

tags:

views:

answers:

ASP.NET MVC 2 Submitting a form and a parameter to controller action

related questions