Object undefined error at var chat = $.connection.chat; while using SignalR

Question

I tried installing SignalR library to create a sample chat application. I believe I have followed all steps given in documentation. I am not sure what could be a reason of failing.

It is failing when it creates a chat object. I am using VS2010 and I downloaded SignalR using VS2010 package download utility.

Is anyone had an issue with this?

Thanks, Samir

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Thanks Hurricanepkt for helping me out.

Yes, I did get all signalR via nuget, using VS2010 'Add Library Package' dialog box. I was getting object undefined error, at var chat = $.connection.chat;

I just made it work but it was ASP.NET Web Application Project. I could not make it work with ASP.NET Website project. I don't know why.

I believe it due to dynamic dll creation in Website Project vs. fixed dll in ASP.NET Web Application Project.

Have you encounter such issue?

Answer 1

What's the name of your hub? If you've changed it to something other than "Chat" then it won't work. I had the same issue because I changed mine to:

    public class ChatHub : Hub
    {
        public void Send(string message)
        {
            Clients.addMessage(message);
        }
    }

Within the Javascript this:

var chat = $.connection.chat;

needed to change to

var chat = $.connection.chatHub;

Answer 2

I was frustrated because of the same problem. It works in Web Project but in Web site it's not. So I checked the script file which is dynamically created.

Left: Web Project - Right: Web Site (http://i.imgur.com/X1XrT.jpg)

As you can see in web site it is not creating "chat" object so it says undefined. After reading your sentences about dynamic dll creation, I put my code behind file in a seperate .cs file and I put that cs file in App_Code folder. I tried and bam, it worked. Checked the dynamic script file:

(http://i.imgur.com/CSInO.jpg)

I don't know much about the technical issue in here, but putting your code in a seperete Class file which is located in App_Code folder resolves the issue.. Have a nice day