[Solved] ItemsRequested event not fired when there is one item in the combo box

[Ivo]

Hello,
I am using Rad combo box control and I want to populate it, initially, with only one default option and upon clicking on the drop-arrow image to populate the remaining items. However, it looks like the ItemsRequested event is not fired when there is one item in the combo box (the event is fired when there aren’t any items in the control).
Is there a way to get this event fired in my scenario?

Thanks,
Ivo

[Nikolay]

Hello Ivo,

You can do the following to accomplish the task.

Hook on the Sys.Application.load event, like:

<script>
  function pageLoad()
  {
      var combo = $find("<%=RadComboBox1.ClientID%>");
      //get the image DOM element and wire its click event
      var imageDOM = combo.get_imageDomElement();
      imageDOM.onclick = function(){ var combo = $find("<%=RadComboBox1.ClientID%>"); combo.RequestItems();}
     
  }

</script>

Hope this helps.

Regards,
Nick
the Telerik team

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[Ivo]

Hi Nik,
Thank you for the quick response.
I tried the code, but I got object not supported JavaScript error on combo.RequestItems() call.

Thanks,
Ivo

[Veselin Vasilev]

Hi Ivo,

The correct syntax is this:

function pageLoad()
{
      var combo = $find("<%=RadComboBox1.ClientID%>");
      //get the image DOM element and wire its click event
      var imageDOM = combo.get_imageDomElement();
      imageDOM.onclick = function(){ var combo = $find("<%=RadComboBox1.ClientID%>");
      combo.requestItems("", false);}
}

You can use another approach also:

Hook on the OnClientDropDownOpening event and invoke the requestItems method there.

function onDropDownOpening(sender, eventArgs)
{
    sender.requestItems("", false);
}

I hope this helps.

Regards,
Veskoni
the Telerik team

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[Ivo]

Works perfect!
Thanks a lot!