Difficulty transferring c# variable to aspx javascript value

Question

I'm having difficulty transferring a c# variable to a javascript value in my aspx file. This is what I currently have:

LetsChat.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Microsoft.AspNet.SignalR.Hubs;

public class Default
{
    public string pass = "password";
}

namespace SignalRChat
{
    [HubName("myChatHub")]
    public class LetsChat : Hub
    {
        public void send(string message)
        {
            Clients.All.addMessage(message);
        }
    }
}

Chat.aspx

<script type="text/javascript">
    var pass = "<%=pass%>";
</script>

Why is it giving me the following compilation error?:

The name 'pass' does not exist in the current context

what does your @Page directive at the top of the .aspx file look like? — MaxPRafferty
– MaxPRafferty, Commented Jul 17, 2013 at 20:38
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Chat.aspx.cs" Inherits="SignalRChat.Chat" %> — methuselah
– methuselah, Commented Jul 17, 2013 at 20:44
Given the above @ Page directive add partial Chat class inheriting from Page (inside the SignalRChat namespace) and put your public string pass there. — sakura-bloom
– sakura-bloom, Commented Jul 17, 2013 at 20:52

McGarnagle · Accepted Answer · 2013-07-17 20:38:28Z

4

The markup in chat.aspx can only see members of its own class -- normally that is the partial class that is contained in code-behind. So, you can't see the pass variable, but you could use:

var pass = "<%=new Default().pass%>";

Alternatively you could make pass a static variable:

public class Default
{
    public static string pass = "password";
}

answered Jul 17, 2013 at 20:38

McGarnagle

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7 Comments

methuselah Over a year ago

I get the following error message now - Member 'Default.pass' cannot be accessed with an instance reference; qualify it with a type name instead

McGarnagle Over a year ago

@methuselah um ... do you also have a page named "Default"?

Jay Patel Over a year ago

@McGarnagle The member variable pass is already static. Why the need for new? Shouldn't it be just Default.pass?

Jay Patel Over a year ago

@methuselah because now it is not a static variable and you're accessing it using new Default().pass which is why it works.

McGarnagle Over a year ago

@JayPatel I meant one or the other -- either make pass static or use new Default().pass.

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