Question

I’m creating this contact form which is pretty much what you can find on the documentation:
http://our.umbraco.org/documentation/Reference/Mvc/forms

The problem is that on my action I’m adding some data to the ViewData collection but I’m unable to get in on the view.

Here is the action:

public ActionResult ProcessForm(ContactFormModel model)
{
    if (!ModelState.IsValid) {
        // do something here
        return CurrentUmbracoPage();
    }    
    // process form
    // set success flag
    ViewData("SuccessMessage") = "We will be contacting you soon..";
    return RedirectToCurrentUmbracoPage();
}

Here is the view:

<h1>@ViewData("SuccessMessage")</h1>

It will return this error:

Compilation Error, Error Message: CS0103: The name ‘ViewData’ does not exist in the current context

Answer 1

ViewData should be set and called using ViewData["some key"], not ViewData("some key"). This is because ViewData is essentially a dictionary and not a method on the ControllerBase class.

See here for a good explanation of its use.