javascript function together with asp.net

Question

I am trying to create a link, which will onclick change a session variable like this


<a href="/Index" onclick="<% HttpContext.Current.Session["location"] = location;%>" >
    <%=location%>
</a>

However, during processing the page the session changes on its own during generating each anchor element (with this onclick attribute). So I would like to create a javascript function like


<script type="text/javascript" >
    function session(location) {
        HttpContext.Current.Session["location"] = location;
    }
</script>

Unfortunatelly, I don't know enough, so this doesn't seem working.. Any ideas? Thanks in advance

Just to be clear, you want to change an ASP.NET variable when someone clicks on a link on the page? — deceze
– deceze ♦, Commented Jul 30, 2009 at 8:26

Community · Accepted Answer · 2017-05-23 12:19:08Z

2

Carefully read through this thread: How is ASP.NET and Javascript related?.

edited May 23, 2017 at 12:19

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answered Jul 30, 2009 at 8:28

deceze♦

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Russ Cam · Accepted Answer · 2009-07-30 08:33:30Z

2

Session is an ASP.NET server object that is not accessible from the client through JavaScript directly (Session may be stored as a cookie on the client, but then even then, it is not designed to be accessed from the client-side directly). You could handle what you want to do in a number of ways -

Store a value in a hidden input when a link is clicked and then read that value server-side and store in Session.
Store in Session on postback in a Click event handler for the anchor. You may want to use the asp:HtmlAnchor control for this and set up an event handler for the OnServerClick event

edited Jul 30, 2009 at 8:33

answered Jul 30, 2009 at 8:27

Russ Cam

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2 Comments

Trimack Over a year ago

I am sorry, but could you please be more specific (maybe with a small example)? I am still quite new to web development and after another hour trying I am still where I was before. I am using the asp.net mvc framework, so I would be rather interested in the second option, since I don't want to create an extra action accepting HttpVerbs.Post for each action. Or maybe I am completely lost in here..

Russ Cam Over a year ago

I'm not overly familiar with how the ASP.NET MVC framework operates and my answer was based on ASP.NET webforms. I am more than happy for someone to edit the post to include an MVC example. In the meantime, i'll see if I can find a resource to update my answer with.

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