public ActionResult Index()

{

    ViewData["Message"] = "Welcome to ASP.NET MVC!";

    ViewData["name"] = Request.Form["name"];

    ViewData["sex"] = Request.Form["sex"];

    return View();

}   

public ActionResult Index(FormCollection form)

{

    ViewData["Message"] = "Welcome to ASP.NET MVC!";

    User u=new User();

    u.Name = form["Name"];

    u.Password = form["Password"];

    return View(u);

}    

<form name="form1" action="/Home/Index" method="post">

    Name:<input type="text" name="name" /><br />

    Sex: <input type="text" name="sex" />

    <input type="submit" value="submit" />

</form>

<%

    if (ViewData["name"] != null)

    {

        Response.Write("your name is:" + ViewData["name"] + ",  your sex is:" + ViewData["sex"]);

    }

%>

:

public ActionResult Index(string name, string sex)

{

    ViewData["Message"] = "Welcome to ASP.NET MVC!";

    ViewData["name"] = name;

    ViewData["sex"] = sex;

    return View();

}