why dose Request.Form["key"] not working?

Question

I am trying to make c# ASP.net code that when I press on the submit form button it will show a table with the form's answers. My only problem is when I'm pressing the submit button nothing happens... can you please tell me where is my problem? Here is my C# code:

public string st = " ";

    protected void Page_Load(object sender, EventArgs e)
    {
      if (Request.Form["submit"] != null)
      {
        st += "<table dir = 'ltr' align = 'center' border = '1'>";
        st += "<tr><th colspan = '2' align = 'center'> form results </th> 
               </tr>";
        string uName = Request.Form["uName"];
        string Pass = Request.Form["Pass"];
        string eMail = Request.Form["eMail"];
        st += "<tr><td> User Name: </td><td>" + uName + "</td></tr>";
        st += "<tr><td> Password </td><td>" + Pass + "</td></tr>";
        st += "<tr><td> eMail </td><td>" + eMail + "</td></tr>";
        st += "</table>";
       }
    }

And here is the line from .aspx code:

</table>
<% Response.Write(st); %>

this is the top of the aspx page:

<%@ Page Title="" Language="C#" MasterPageFile="master.master" 
    AutoEventWireup="true" CodeFile="Register.aspx.cs" Inherits="mainMasterPage.Register" %>

Thanks!
Tal

FIXED

instead of type Request.Form["..."] I type Request["..."] and thats it! Thank you all