c# - Telerik ComboBox OnClientKeyPressing searching is very slow -

c# - Telerik ComboBox OnClientKeyPressing searching is very slow -

i have radcombobox beingness populated big number of items, atleast 50k.

<telerik:radcombobox id="cbsupplier" runat="server" width="85%" enableitemcaching="true" enableloadondemand="false" filter="contains" onclientkeypressing="handlekeypress"> </telerik:radcombobox> <script type="text/javascript"> function handlekeypress(sender, e) { if (!sender.get_dropdownvisible()) sender.showdropdown(); } </script>

this javascript handlekeypress function searching in combobox input text. problem searching slow. looks when come in key, browser halts 5 6 seconds , search in combobox.

is there solution create searching little faster in radcombobox?

i don't think need javascript @ all, , if remove calls , allow telerik command internal functions on own, might see minor boost. tried 1 one thousand items , seemed bit quicker adding showdropdownontextboxclick="true":

<telerik:radcombobox id="cbsupplier" runat="server" width="85%" enableitemcaching="true" enableloadondemand="false" filter="contains" showdropdownontextboxclick="true"> </telerik:radcombobox>

c# javascript asp.net .net telerik