How to pass information between different web page - asp.net

Question

Hi everyone I am trying to pass information between diferent page, but I don't know how.
I have this form with Html.ActionLink inside
<% using (Html.BeginForm("Save", "Envi"))
{%>
<%: Html.ValidationSummary(true)%>
<div class="editor-label">
<%: Html.Label("Description:")%>
</div>
<div class="editor-field">
<%: Html.TextBox("info", lp.Description)%>
...
<div>
<%: Html.ActionLink("Change Image", "ChangeImg", "Envi", new {id=lp}, new {id="cambio"})%>
...
<p>
<input type="submit" value="Save" name="<%= lp.Id %>"/>
</p>
<% } %>
<% } %>
When I click the Html.ActionLink I show other page (dialog with fancyBox) where I select an Image.
I want to pass all data from the Form to this page. Now when I show the form again I have the new data, no the old data.
How can I do that???
Thanks.

Answer 1

You are suggested to use TempData dictionary. This will be available for only the next request.
Quoting from MSDN:
An action method can store data in the controller's TempDataDictionary
object before it calls the controller's RedirectToAction method to
invoke the next action. The TempData property value is stored in
session state. Any action method that is called after the
TempDataDictionary value is set can get values from the object and
then process or display them. The value of TempData persists until it
is read or until the session times out. Persisting TempData in this
way enables scenarios such as redirection, because the values in
TempData are available beyond a single request.
Hope this gives your answer.

Answer 2

Ideally, I believe the form should submit to a single action.
So the controller may look like this:
public class HomeController : Controller
{
public ViewResult Index()
{
return View();
}
[HttpPost]
public ActionResult Index(ItemModel itemModel, string submit)
{
//I'm not sure why I need this but the fields display with empty results on my machine otherwise
ModelState.Clear();
if (submit == "edit")
{
this.TempData.Add("item", itemModel);
return View("ChangeImage", new ImageModel { ImageName = itemModel.ImageName });
}
else
{
//perform save here
return RedirectToAction("ViewAfterSavePerformed");
}
}
[HttpPost]
public ViewResult Image(ImageModel imageModel)
{
ItemModel itemModel = (ItemModel)this.TempData["item"];
itemModel.ImageName = imageModel.ImageName;
return View("Index", itemModel);
}
}
With the following view models:
public class ItemModel
{
public string Description { get; set; }
public string ImageName { get; set; }
}
public class ImageModel
{
public string ImageName { get; set; }
}
And the following views:
Index:
<h2>Index</h2>
#using (Html.BeginForm())
{
<p>Description: #Html.EditorFor(m => m.Description)</p>
<p>Image: #Html.EditorFor(m => m.ImageName)</p>
<input type="submit" name="submit" value="edit" />
<input type="submit" name="submit" value="save" />
}
Change Image:
<h2>ChangeImage</h2>
#using (Html.BeginForm("Image", "Home"))
{
<p>Image: #Html.EditorFor(m => m.ImageName)</p>
<input type="submit" name="submit" value="save image" />
}
Hopefully this should may sense even though i've used razor syntax.