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Not answered RadPanelBar slow expand/collapse in IE7

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  • Kees avatar

    Posted on Mar 17, 2011 (permalink)

    Hello,
    I have a RadPanelBar inside a RadPane/Splitter and it expands/collaps very slow and the navigateUrl opens slow. This is only in IE7, other browsers work fast (IE8, FF3.6, Safari, Chrome) When I click the PanelBarItem, the CPU will rice to 100% for a short period, until it finally expands/collaps or opens the navigateUrl.

    If the RadPanelBar is outside of the RadPane/Splitter it still expands/collaps slow, but slightly faster than inside the RadPane/Splitter. The demos I see at the Telerik website also run slow on IE7 (tested this on 3 different computers)

    The RadPanelBar is initialised like this:

    <telerik:RadPanelBar runat="server" ID="LeftMenu" Width="200" ExpandMode="SingleExpandedItem"
        AllowCollapseAllItems="true" CollapseAnimation-Type="None" CollapseAnimation-Duration="0"   
        ExpandAnimation-Duration="0" ExpandAnimation-Type="None" PersistStateInCookie="false"
         EnableEmbeddedBaseStylesheet="true" EnableEmbeddedSkins="false" EnableViewState="true" CollapseDelay="0"
          ExpandDelay="0"
         >
    </telerik:RadPanelBar>

    The PanelBarItems are added dynamicly, but for some (I use multiple RadPanelBars on a single page) they are in the aspx. There is no difference in behaviour.

    Does anyone know this issue?

    With kind regards,

    Kees de Wit

    Reply

  • Dimitar Terziev Dimitar Terziev admin's avatar

    Posted on Mar 22, 2011 (permalink)

    Hello Kees,

    Usually the performance of a certain page depends on the amount of HTML markup and scripts. We haven't noticed a significant lack of performance when using our controls in IE7.

    My suggestion is to check this article here, which gives a couple of tips how to improve the performance of our controls.

    All the best,
    Dimitar Terziev
    the Telerik team
    Vote for the 7 Telerik products at the 2011 Great Indian Developer Awards!

    Reply

  • Chuck avatar

    Posted on Jan 10, 2012 (permalink)

    I have the same issue with IE7 only.  Using Q3 2011.03.1115.35.
    I will check out the performance suggestions.

    Reply

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