asp.net - How to lazy load Infragistics UltraWebTree control? -

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i cannot find examples of how lazy load infragistics ultrawebtree v6.3

i found docs on infragistics site tend limited latest version of controls, legacy app unable upgrade. has got example code or links demonstrate how lazy-load nodes in control?

the current implementation have loads 1.35mb of html because populating entire tree!! yikes!

it turnedout simple piece of jquery , webservice return rendered nodes.

any node has sub-items initialised text "loading..." script knows attempt retrieve them.

<script type="text/javascript" language="javascript">     var imagetypeexpression = "img[imgtype='exp'][src$='plus.gif']";     var maxretries = 5;     jquery(document).ready(function() {         jquery("#t_treelistctl " + imagetypeexpression).click(imageclick);         jquery("#tdlists").show();     });      function imageclick() {         var parentdivid = jquery(this).parent().attr('id');         var nodesdiv = '#m_' + parentdivid;         if (jquery(nodesdiv).text() == 'loading...') {             getnodes(parentdivid, nodesdiv, maxretries);         }     }      function getnodes(parentdivid, nodesdiv, retrycount){         if (retrycount == 0) {             jquery(nodesdiv).html("<div>loading... failed.</div>");         }         else {             jquery.ajax({ type: "post",                 url: "webservices/treenodes.asmx/getchildnodes",                 data: "{'parentid' :'" + parentdivid + "'}",                 datatype: "json",                 contenttype: 'application/json; charset=utf-8',                 success: function(json) {                     var result = eval("(" + json.d + ")");                     jquery(nodesdiv).html(result.value);                     jquery(imagetypeexpression, nodesdiv).click(imageclick);                 },                 timeout: 100,                 error: function(xmlhttprequest, textstatus, errorthrown) {                     if (textstatus == 'timeout') {                         getnodes(parentdivid, nodesdiv, retrycount - 1); //keep trying                     }                 }             });         }     } </script>

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