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Q22007 version performs better?

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ComboBox

This is a migrated thread and some comments may be shown as answers.

Travis asked on 01 Mar 2011, 01:45 AM

I'm loading my combo box with around 4,000 items and am noticing a significant difference in performance between the old Q22007 version of the rad.combobox and the Q32010 ajax version. Here's what my old Q22007 version looks like:

<radcb:radcombobox id="EntityList2"

runat="server"

Skin="WindowsXP"

MarkFirstMatch="true"

AllowCustomText="true"

DataSourceid="MyDataSource"

DataTextField="MyTextField"

DataValueField="MyValueField"

Height="400px" Width="400px"

AutoPostBack="True" EnableViewState="false"></radcb:radcombobox>

Here's what I'm using for my new Q32010 combo box:

<telerik:RadComboBox id="EntityList"

runat="server"

MarkFirstMatch="true"

AllowCustomText="true"

DataTextField="MyTextField"

DataValueField="MyValueField"

DataSourceID="MyDataSource"

Height="400px" Width="400px" EnableVirtualScrolling="true"

AutoPostBack="True" EnableViewState="false" >

</telerik:RadComboBox >

The old control loads the list almost instantly, but the new one takes 10 seconds!!! How can acheive the lightening fast performance I enjoyed in the old control? I don't want to have to use LoadOnDemand, unless it will display all items in the list. If I can't, I'm just going to keep using the old one which is sad really.

1 Answer, 1 is accepted

answered on 01 Mar 2011, 02:15 AM

I think I just answered my own question. This seems to work pretty good:

<telerik:RadComboBox ID="EntityList" runat="server" Height="180px" Width="350px"

DataSourceID="MyDataSource"

DataTextField="MyTextField" DataValueField="MyValueField"

EnableAutomaticLoadOnDemand="true" ShowMoreResultsBox="true" EnableVirtualScrolling="true"

ItemsPerRequest="10" HighlightTemplatedItems="true" DropDownWidth="400px" MarkFirstMatch="true">

</telerik:RadComboBox>