Loading usercontrols on demand under jquery tabs

Question

I have few jquery tabs on a usercontrol that loads a separate user control under each. Each user control is unique. It all works fine right now but the overall page response is too slow. In order to improve performance I am trying to load few user controls under these tabs on demand (that is on click of tab). Possibly without post back... ajaxish. Can anyone guide me? I tried to follow this tutorial and this one too but did not have any success. I have attached the code for parent usercontrol.

<ul id="tabs">
<li class="active">Rewards</li>
<li id="liCoupons">Coupons</li>
<li id="liLibrary">Library</li>
<li id="liProducts">Favorite</li>
<li id="liPreferences">Preferences</li></ul><ul id="tabPanes" class="rewardsTabs">
<li>
    <div class="wrapper active">
        <uc:Rewards ID="wellness" runat="server" />

    </div>
</li>
<li id="liCoupons">
    <div class="wrapper">
        <uc:Coupon runat="server" />
    </div>
</li><li id="liLibrary">
    <div class="wrapper">
        <uc:Library runat="server" />
    </div>
</li><li id="liProducts">
    <div class="wrapper">
        <uc:Products runat="server" />
    </div>
</li>
<li>
    <div class="wrapper">
        <div class="preferences">
            <uc:Preferences runat="server"/>
        </div>

    </div>
</li>

Answer 1

The second link you mentioned should work. You don't need to define any user controls in your markup.

<ul id="tabs">
    <li class="active">Rewards</li>
    <li id="liCoupons">Coupons</li>
    <li id="liLibrary">Library</li>
    <li id="liProducts">Favorite</li>
    <li id="liPreferences">Preferences</li>
</ul>
<div id="results" class="wrapper"></div>

Each tab click will do an ajax call

$.ajax({
       type: "POST",
       url: "Default.aspx/WebMetodToCall", 
       data: data, // I wouldn't prefer passing webmethod name here
       contentType: "application/json; charset=utf-8",
       dataType: "json",
       success: function (msg) {
           $('#result').html(msg.d);
       },
       failure: function (msg) 
           //error
       }
   });

to the web methods.

[WebMethod]
   public static string Rewards()
   {
       return RenderControl("~/controls/rewardsControl.ascx");
   }

[WebMethod]
   public static string Coupons()
   {
       return RenderControl("~/controls/couponsControl.ascx");
   }    
...

Each method will render only the requested control. Also in your method you can keep or extract the viewstate depending on your needs. After rendering, the webmethod should pass back the html string to be injected into the placeholders.

If you tried this and were successful rendering one control at a time but still seeing slowness then you have some back end issues while getting the data. If your controls are data heavy I would recommend doing some server side caching.

Hope this helps.