c# - The name 'hello' does not exist in the current context -

i have in default.aspx

<%@ page title="home page" language="c#" masterpagefile="~/site.master" autoeventwireup="true"     codebehind="default.aspx.cs" inherits="approvalprocess._default" %>  <asp:content id="headercontent" runat="server" contentplaceholderid="headcontent"> </asp:content> <asp:content id="bodycontent" runat="server" contentplaceholderid="maincontent">     <h2>         welcome asp.net!     </h2>     <p>         learn more asp.net visit <a href="http://www.asp.net" title="asp.net website">www.asp.net</a>.     </p>     <p>         hello, it's working <a href="http://go.microsoft.com/fwlink/?linkid=152368&amp;clcid=0x409"             title="msdn asp.net docs">documentation on asp.net @ msdn</a>.     </p>     <script>         alert("<%= hello%>");     </script> </asp:content> 

and default.aspx.cs

namespace approvalprocess {     public partial class _default : system.web.ui.page     {         string hello = "hello";         protected void page_load(object sender, eventargs e)         {          }     } } 

the following error

compiler error message: cs0103: name 'hello' not exist in current context

if don't specify visibility defaults private. view cannot see hello variable because view class inherits code-behind class. need declare either protected or public depending on how visible want (likely protected correct in case).

protected string hello = "hello"; 

or

public string hello = "hello"; 

it might enlightening read on member visibility understand options mean can make informed choices continue develop.

http://en.wikipedia.org/wiki/class_(computer_programming)#member_accessibility