Hi,

 

Currently we has a sample for that :

 

You many need the last version for the Cancel funciton of the select event.

 

<script type="text/javascript">
 //prevent duplicated items:
    function CuteWebUI_AjaxUploader_OnSelect(files)
    {
  var sames=[];
  var items=uploader.getitems();
  for(var i=0;i<files.length;i++)
  {
   var file=files[i];
   var exists=false;
   for(var j=0;j<items.length;j++)
   {
    var item=items[j];
    if(item.FileName==file.FileName)
    {
     exists=true;
    }
   }
   if(exists)
   {
    sames.push(file.FileName);
    file.Cancel();
   }
  }
  if(sames.length>0)
  {
   alert("These file(s) are already in the queue : \r\n\t"+sames.join('\r\n\t'));
  }
    }
</script>

 

Regards,

Terry