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unable to get property 'removeChild' of undefined or null reference

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AjaxLoadingPanel
This is a migrated thread and some comments may be shown as answers.
Frank
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Frank asked on 24 Feb 2017, 01:14 AM

I've tried to search, but not much information on how to fix.  The issue is that:

 

1. I have 2 radgrid, radgrid A and radgrid B.

2. When radgrid A gets clicked it will refresh radgrid B with new data 

3. during the refresh it uses the loading panel.

4. If just the "single click" there are no issue.

5. But when you "double click" on grid A, it will cause panel to show up on grid B and NEVER goes away.  

So when I do this in the development enviroment, this is the error I get "unable to get property 'removeChild' of undefined or null reference"

 

I've tried to use "inline" as suggested in one of the thread, no use, still same issue.  Also tried set MinDisplayTime=750 as some suggest, no use either.  

Below is the code, thank you very much!

    <asp:ScriptManager ID="ScriptManager1" runat="server"/>
    <telerik:RadAjaxManager ID="RadAjaxManager" runat="server">
        <clientevents onrequeststart="onRequestStart" />
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="grdA">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="grdB" UpdatePanelRenderMode="Inline"
                        LoadingPanelID="RadAjaxLoadingPanel1" UpdatePanelHeight="99%" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>

 

    <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server" 
            AnimationDuration="500" Skin="Vista" MinDisplayTime="750">
    </telerik:RadAjaxLoadingPanel>

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