Hiddenfor not getting correct value from view model

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What you are doing wrong is that you are trying to modify the value of a POSTed variable in your controller action. So I suppose you are trying to do this:

[HttpPost]
public ActionResult Foo(SomeModel model)
{
    model.CurrentStep = Steps.SomeNewValue;
    return View(model);
}

and html helpers such as HiddenFor will always first use the POSTed value and after that the value in the model.

So you have a couple of possibilities:

  1. Remove the value from the modelstate:

    [HttpPost]
public ActionResult Foo(SomeModel model)
{
    ModelState.Remove("CurrentStep");            
    model.CurrentStep = Steps.SomeNewValue;
    return View(model);
}

  2. Manually generate the hidden field

    <input type="hidden" name="NextStep" value="<%= Model.CurrentStep %>" />

  3. Write a custom helper which will use the value of your model and not the one that’s being POSTed

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