Items are not visible for first time loading in RadComboBox

[Mary]

Hi,
Iam adding items to radcombobox  in javascript method which is called in OnKeyUp event of radcombobox.the problem is items are adding but not visible
my POC is as follows:

<script type="text/javascript">
    function dropdownBindByMatchedText(sender, args) {

        var comboboxSearch = $find("<%= rdcmbSearch.ClientID %>");
        comboboxSearch.clearItems();
        var item1 = new Telerik.Web.UI.RadComboBoxItem();
        var item2 = new Telerik.Web.UI.RadComboBoxItem();
        var item3 = new Telerik.Web.UI.RadComboBoxItem();
        item1.set_text("a");
        item2.set_text("b");
        item3.set_text("c");
        comboboxSearch.get_items().add(item1);
        comboboxSearch.get_items().add(item2);
        comboboxSearch.get_items().add(item3);
    }
</script>
    <telerik:RadComboBox ID="rdcmbSearch" OnKeyUp="dropdownBindByMatchedText()"
        EnableLoadOnDemand="true" Height="200px" Width="220px" DropDownWidth="220px"
        wrap="false" runat="server" >
    </telerik:RadComboBox>


can anybody help me?

[Princy]

Hello Mary,

I tried the same scenario with EnableLoadOnDemand as false and it worked as expected in my end.

aspx:

<telerik:RadComboBox ID="rdcmbSearch" 

       EnableLoadOnDemand="false" Height="200px" Width="220px" DropDownWidth="220px"  OnKeyUp="dropdownBindByMatchedText()"

       wrap="true" runat="server" >
</telerik:RadComboBox>

When you set the EnableLoadOnDemand property to True, items already added in the ItemsRequested event handler are cleared when an item is requested. Check the following help documentation which explains about this in detail.
Load On Demand Overview.

Thanks,
Princy.