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Re: Who's online?

Dec 03, 2012 06:00 PM|LINK

something like this should help

http://www.aspdotnetfaq.com/Faq/How-to-show-number-of-online-users-visitors-for-ASP-NET-website.aspx

or there are multiple solutions...

create client timer event on your blog page. which will send a certain ping message to a webserver with identifier (like userid or auth cookie)

server method would receive all ping messages... based on identifier it would identify whether ping message is from new user or already present user... then increase the count and display that user as online... if ping message does not arrive after certain interval (which is more than timer on client side) then decerease the count

hope this helps...

Cheers!
KK

Please mark as Answer if post helps in resolving your issue
My Site

Edited by kedarrkulkarni on Dec 03, 2012 07:34 PM
Edited by kedarrkulkarni on Dec 04, 2012 05:25 PM
Edited by kedarrkulkarni on Dec 04, 2012 06:00 PM
Edited by kedarrkulkarni on Dec 04, 2012 06:02 PM
Edited by kedarrkulkarni on Dec 04, 2012 06:04 PM
Edited by Mac14 on Dec 04, 2012 06:06 PM
Edited by mbanavige on Dec 16, 2012 10:07 PM

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crouchie2004

Member

498 Points

308 Posts

Re: Who's online?

Dec 03, 2012 07:33 PM|LINK

In the Global.asax file

Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
        ' Code that runs on application startup
        Application("OnlineNow") = 0
    End Sub

    Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
        ' Code that runs when a new session is started
        Application.Lock()
        Dim intUsers As Integer = CInt(Application("OnlineNow"))
        intUsers += 1
        Application("OnlineNow") = intUsers
        Application.UnLock()
    End Sub

    Sub Session_End(ByVal sender As Object, ByVal e As EventArgs)
        ' Code that runs when a session ends.
        ' Note: The Session_End event is raised only when the sessionstate mode
        ' is set to InProc in the Web.config file. If session mode is set to StateServer
        ' or SQLServer, the event is not raised.
        Application.Lock()
        Dim intUsers As Integer = CInt(Application("OnlineNow"))
        intUsers -= 1
        Application("OnlineNow") = intUsers
        Application.UnLock()
    End Sub

Then in the application:

Online Now: <%= Application("OnlineNow").ToString()%>

In the Web.config, it's set to 10 mins:

<sessionState cookieName="SomeNameHere" timeout="10" />

Hope this helps

Please click 'Mark as Answer' if my reply helped
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Edited by crouchie2004 on Dec 03, 2012 07:34 PM
Edited by crouchie2004 on Dec 03, 2012 07:34 PM
Edited by crouchie2004 on Dec 04, 2012 05:25 PM
Edited by crouchie2004 on Dec 04, 2012 06:00 PM
Edited by crouchie2004 on Dec 04, 2012 06:02 PM
Edited by crouchie2004 on Dec 04, 2012 06:04 PM
Edited by Mac14 on Dec 04, 2012 06:06 PM
Edited by mbanavige on Dec 16, 2012 10:07 PM

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Mac14

Member

46 Points

71 Posts

Re: Who's online?

Dec 04, 2012 03:41 PM|LINK

Hi crouchie thanks for your simple code. But I am using C# and I had some problems when I tried to conver it to c#. WHen I wrote the codes it didn't see the "Application" secitons. It says "Application" is a namespace but it used like a method. or something like that. How can I fix it?

Thanks

Have a great day!

Edited by Mac14 on Dec 04, 2012 05:25 PM
Edited by Mac14 on Dec 04, 2012 06:00 PM
Edited by Mac14 on Dec 04, 2012 06:02 PM
Edited by Mac14 on Dec 04, 2012 06:04 PM

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crouchie2004

Member

498 Points

308 Posts

Re: Who's online?

Dec 04, 2012 04:22 PM|LINK

Hi,

Do you have a Global.asax file in your website? If not, add it. You will then see the Application sections like in my original reply. You can then place the code in.

Global.asax file will look like this:

<%@ Application Language="VB" %>

<script runat="server">

    Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)

    End Sub
    
    Sub Application_End(ByVal sender As Object, ByVal e As EventArgs)

    End Sub
        
    Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)

    End Sub

    Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)

    End Sub

    Sub Session_End(ByVal sender As Object, ByVal e As EventArgs)

    End Sub
</script>

These correspond to the code in my original post

---

When I wrote 'application' I meant within the website (master page for example). For some reason the site stripped out the 'p' tag surrounding it

<p>Online Now: <%= Application("OnlineNow").ToString()%></p>

Should show for Example at runtime:

Mac14

Member

46 Points

71 Posts

Re: Who's online?

Dec 04, 2012 05:24 PM|LINK

Hi,

Maybe I'm doing something wrong or maybe VB.net and c# files are different.(please check c# ones then you'll understand what I mean(you can use a vb to C# conversation page)) I added Global.asax into my application named "WebApplication1". But it still gives the same error. the error exactly is "Appliacation(I tried to replace it with my applicaitons name) is a "namespace" but is used like a "variable". And wrote your last code into my page's(homepage.aspx) source section and it gave the same error. And in global asax file I don't have <%@ Application Language="the language" %> or <script runat="server"> tags. I am sorry I am a beginner and thank you so MUCH for you help and your caring. I'Ll be so happy if you can keep helping me with this error.

Waiting for your answer.

THANKS!

Have a great day!

Edited by Mac14 on Dec 04, 2012 05:25 PM
Edited by Mac14 on Dec 04, 2012 05:25 PM
Edited by Mac14 on Dec 04, 2012 06:00 PM
Edited by Mac14 on Dec 04, 2012 06:02 PM
Edited by Mac14 on Dec 04, 2012 06:04 PM

Reply

crouchie2004

Member

498 Points

308 Posts

Re: Who's online?

Dec 04, 2012 05:48 PM|LINK

Hi,

I just created a new project, added a Default.aspx and a Global Class to the project

Here is a copy/paste of the Global file:

<%@ Application Language="C#" %>

<script runat="server">

    public void Application_Start(object sender, EventArgs e)
    {
        // Code that runs on application startup
        Application["OnlineNow"] = 0;
    }

    public void Application_End(object sender, EventArgs e)
    {
        // Code that runs on application shutdown
    }

    public void Application_Error(object sender, EventArgs e)
    {
        // Code that runs when an unhandled error occurs
    }

    public void Session_Start(object sender, EventArgs e)
    {
        // Code that runs when a new session is started
        Application.Lock();
        int intUsers = Convert.ToInt32(Application["OnlineNow"]);
        intUsers += 1;
        Application["OnlineNow"] = intUsers;
        Application.UnLock();
    }

    public void Session_End(object sender, EventArgs e)
    {
        // Code that runs when a session ends.
        // Note: The Session_End event is raised only when the sessionstate mode
        // is set to InProc in the Web.config file. If session mode is set to StateServer
        // or SQLServer, the event is not raised.
        Application.Lock();
        int intUsers = Convert.ToInt32(Application["OnlineNow"]);
        intUsers -= 1;
        Application["OnlineNow"] = intUsers;
        Application.UnLock();
    }
       
</script>

Here is the code I put in the Default.aspx page:

<p>Online Now: <%= Application["OnlineNow"].ToString()%></p>

Set 'debug="true" in the web.config file

<configuration>

    <system.web>
      <compilation debug="true" targetFramework="4.0" />
    </system.web>

</configuration>

Change the targetFramework to your version of the Framework

That will then work

---

You said you later wish to show the members that are online. The Membership Class has a built-in function for that but only when they are logged in (Membership.GetNumberOfUsersOnline().ToString();) and not guests. Remember to add this to the top:

using System.Web.Security;

For the c# code: http://msdn.microsoft.com/en-us/library/system.web.security.membership.getnumberofusersonline.aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-2

Please click 'Mark as Answer' if my reply helped
Homepage | YouTube Channel | Post code, ~~not links~~

Edited by crouchie2004 on Dec 04, 2012 06:00 PM
Edited by crouchie2004 on Dec 04, 2012 06:00 PM
Edited by crouchie2004 on Dec 04, 2012 06:02 PM
Edited by crouchie2004 on Dec 04, 2012 06:02 PM
Edited by crouchie2004 on Dec 04, 2012 06:04 PM
Edited by crouchie2004 on Dec 04, 2012 06:04 PM
Marked as answer by Mac14 on Dec 04, 2012 06:06 PM

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Mac14

Member

46 Points

71 Posts

Re: Who's online?

Dec 04, 2012 06:06 PM|LINK

IT WORKED NOW! Thank you so much for you help. :))) And I don't know why but not it accepts "Application" :)

Thanks again. :)

Have a great day!

Reply

crouchie2004

Member

498 Points

308 Posts

Re: Who's online?

Dec 04, 2012 06:11 PM|LINK

Happy to help

The Application needed the [] rather than () I guess. If you got Object not set... error it means the session variable 'OnlineNow' was different

Good luck!!

Please click 'Mark as Answer' if my reply helped
Homepage | YouTube Channel | Post code, ~~not links~~

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