具有多个回发的ModalPopupExtender [英] ModalPopupExtender with multiple postbacks

问题描述

我在使用ModalPoupExtender时遇到麻烦.它包含几个下拉列表.第二个ddl将根据第一个ddl的选择进行填充.但是要做到这一点，我需要执行回发.当我执行Modal Popup时，要么消失，要么在屏幕的左下角进行渲染，我似乎无法填充它.我已经搜寻并寻找一种补救措施，但是还没有碰到任何运气.我可以帮忙.

I am having trouble with the ModalPoupExtender. It contains several Dropdown List. the Second ddl is populated based on the selection of the first. but to do this I need to perform a postback. When i do the Modal Popup either disapears or renders in the lower left hand corner of the screen and I cannot seem to get it to populate. I have searched and searched for a remedy but have not came up with any luck. I could use some help please.

    <asp:Panel ID="pnlVendorSytlyPopUp" runat="server" CssClass="modalPopup" style="display:none;">
                                                <asp:Panel ID="pnlDragHandle1" runat="server" CssClass="dragPanel"><div style="display:inline; removed5; removed5; float:right; width:400px;">Classification Specs and Data
                                                <div style="float:right;removed:pointer; "><!--[if IE 7]><div style="removed:absolute; removed5; removed5;"><![endif]-->
                                                    <asp:ImageButton ID="ImageButton5" runat="server" ImageUrl="~/Images/Site/btnClose.png" CausesValidation="false" /><!--[if IE 7]></div><![endif]--></div></div>
                                                
<ajaxToolkit:UpdatePanel ID="UpdatePnlCat"  runat="server" UpdateMode="Conditional">
                                                    <contenttemplate>
                                                        <table border="0" cellpadding="4" cellspacing="0">
                                                            <tr>
                                                                <td align="left">Top Category</td>
                                                                <td align="left">
                                                                    <asp:DropDownList ID="ddlTopCat" runat="server" AutoPostBack="true" CausesValidation="false"

                                                                        onselectedindexchanged="ddlTopCat_SelectedIndexChanged">
                                                                        <asp:ListItem Text="Adult" />
                                                                        <asp:ListItem Text="Kids" />
                                                                        <asp:ListItem Text="Bedding" />
                                                                    
                                                                </td>
                                                            </tr>
                                                            <tr>
                                                                <td align="left">Category</td>
                                                                <td align="left">
                                                                    <asp:DropDownList ID="ddlCat" runat="server">
                                                                    
                                                                </td>
                                                            </tr>
</table></contenttemplate>
 
<asp:Button ID="btnHiddenValue1" runat="server" Text="Button" Style="display:none;" />
                                        <cc1:ModalPopupExtender ID="popupVendorStyle"  runat="server" TargetControlID="btnHiddenValue1" BackgroundCssClass="modalBackground" PopupControlID="pnlVendorSytlyPopUp" CancelControlID="ImageButton5" OkControlID="Button2" PopupDragHandleControlID="pnlDragHandle1" DropShadow="true">

所有这些都放在另一个更新面板中.

all this sits in another update panel.

推荐答案

我终于使它起作用了.

vendorStylePopup面板位于更新面板中.我必须添加ChildrenAsTriggers ="false"和updatePanel作为下拉列表ChildrenAsTriggers ="true"

I finnally got this to work.

The vendorStylePopup Panel sits in an update panel. I had to add ChildrenAsTriggers="false" and the updatePanel for the dropdown list ChildrenAsTriggers="true"

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