get value in input text box and send it to controller - asp.net-mvc-3

Question

What are the ways to render the input value filename and send it to a controller :
<div id="fileuploaddiv" class="fileuploaddivclass">
<form action="#Model.FormAction" method="#Model.FormMethod"
enctype="#Model.FormEnclosureType">
<input type="hidden" name="key" value="uploads/${filename}" id="filename" />
<input type="hidden" name="AWSAccessKeyId" value="#Model.AWSAccessKey" />
<input type="hidden" name="Content-Type" value="image/jpeg">
<div>
Please specify a file, or a set of files:
<input type="file" name="file" />
</div>
<input type="submit" value="Upload" />
</form>
</div>

Answer 1

You need to look up some MVC3 conventions (I'd recommend NerdDinner as a good starting tutorial), but here is a somewhat similar approach to what you want to do:
#Model YourViewModel
<div id="fileuploaddiv" class="fileuploaddivclass">
#using(Html.BeginForm(Model.FormAction, Model.FormController, FormMethod.Post)
#Html.HiddenFor(model.key => ${fileName})
#Html.HiddenFor(model.AWSAccessKeyID)
#Html.HiddenFor(model.Content-Type)
#<input type="submit" value="Submit My Form" />
#Html.EndForm()
</div>
Your model would look like (And I'm confused here because you seem to be dynamically setting the controller and action, which is unusual):
public class YourViewModel
{
public string FormAction { get; set; }
public string FormController { get; set; }
public int AWSAccessKeyID { get; set; }
public string Content-Type { get; set; }
}
Now on to controllers:
[HttpGet]
public ActionResult WhateverControllerName()
{
YourViewModel yvm = new YourViewModel();
//Initalize viewmodel here
Return view(yvm);
}
[HttpPost]
public ActionResult WhateverControllerName(YourViewModel yvm)
{
if (ModelState.IsValid) {
//Do whatever you want here. Perhaps a redirect?
}
return View(yvm);
}
Note: I am garbage at syntax, so you'll have to check this, but Visual Studio should tell you what works.