Get The Value Of An Input Of Html.textbox In MVC 2

I currently have a TextBox using: <%: Html.TextBox("TextBox1") %> How do I get the value of what is typed into the TextBox as a string so that I can use that string variable throughout my application? The view has he following with the inherits on top of page to model. This page is named "InputNumbersSection":

<%: Html.TextBoxFor(m => m.Number) %>
and the action:
<%: Html.ActionLink("Get Number!", "DisplayNumbersSection") %>
The Model has this:
public class NumberModels
{
public string Number { get; set; }
}
The controller has the following:
public ActionResult DisplayNumbersSection(NumberModels model)
{
if (ModelState.IsValid)
{
string TextBoxValue = model.Number;
ViewData["Number"] = TextBoxValue;
}
return View();
}

The ViewData I use in another page to return the number from the textbox typed in the view. When I type somthing into the textbox, I do not see the property getting hit or executed. The "Number" property returns NULL all the time. It almost seems as if it is not picking up what I type into the TextBox