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Modal Popup in Ajax Control Toolkit display onload

May 3, 2008

There is a small bug in AjaxControlToolkit when you will add Modal Popup Control Extender,

it is being shown for one second when page is being load. It is not a big issue, but it can be very annoying.

Below file shows the proeblem and the resolution. Resolution is very simple, you just need to add
style=”display:none” to ModalPanel control.

 

<asp :Panel runat="server" ID="ModalPanel" CssClass="modalPopup">
        <asp :Label runat="server" ID="ModalLabel" Text="Modal Panel Label" />
        <br /><br />
        <asp :Button runat="server" ID="OkButton" Text="Ok" />
    </asp>
    <cc1 :ModalPopupExtender ID="ModalPopupExtender1" runat="server"
        PopupControlID="ModalPanel" DropShadow="true" TargetControlID="ShowButton"
        OkControlID="OkButton" BackgroundCssClass="modalBackground" >
    </cc1>

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