Solution:
In View:
<pre lang="c#"><% using (Html.BeginForm("Search", "Home", FormMethod.Post))
{%>
<% Html.ValidationSummary(true); %>
<input type="text" id="key" name="key" value="" />
<input type="submit" value="Go!" />
<% } %>
Add method to controller:
[HttpPost]
public ActionResult Search(FormCollection form)
{
return RedirectToAction("SearchAllByKey", new { key = form["key"] });
}
Thanks LeftyX.