WebDropDown not dropping down | Infragistics Forums

535

WebDropDown not dropping down

Rick Dorris posted over 15 years ago

I've put a WebDropDown inside a panel which has the ModalPopupExtender on it and bound the drop down to an array. When I view the page, I can't get the dropdown to dropdown. Pressing the up and down arrows does scroll through the list of options, but clicking the down arrow does not cause the dropdown list to show. Thanks for any ideas.

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Offline Chris posted over 15 years ago in reply to Alexander Todorov

I'm having a similar issue - I have the WebDropDown inside a WebDialogWindow. I've tried all the various suggestions in this thread, but none seem to work. The values are loaded, and I can select the WebDropDown and change the value by using the arrow keys, but the dropdown does not appear at all.
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24671

Alexander Todorov posted over 15 years ago in reply to Rick Dorris

Hi,

I have created a sample ASPX page, with the following contents, and the Dropdown seems to appear correctly:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register Assembly="Infragistics35.Web.v9.1, Version=9.1.20091.1009, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"

   Namespace="Infragistics.Web.UI.ListControls" TagPrefix="ig" %>

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

   <title></title>

</head>

<body>

   <form id="form1" runat="server">

   <asp:ScriptManager runat="server"></asp:ScriptManager>

   <div>



   <asp:Button ID="Button1" runat="server" Text="show popup" />



   <asp:Panel runat="server" ID="WebDropDownPanel1" Width="400px" Height="400px" BackColor="Green">

   <ig:WebDropDown ID="WebDropDown1" runat="server" Width="200px">

   </ig:WebDropDown>

   </asp:Panel>



   <cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="Button1" PopupControlID="WebDropDownPanel1">

   </cc1:ModalPopupExtender>

   </div>

   </form>

</body>

</html>

The Data source is a List of strings, it is set in the Page_Load like that :

List<string> data = new List<string>();

data.Add("DropDown Item");

// .... etc

WebDropDown1.DataSource = data;

I have also attached a screenshot. Maybe in your case the ModalPopupExtender is configured differently. Could you attach your ASPX code, i will try it and see how it behaves?

Thanks very much,

Angel
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535

Offline Rick Dorris posted over 15 years ago in reply to Alexander Todorov

Hi,

Neither of the options you listed made a difference. I did create a test page a dropped the webpulldown on it and it worked ok, so I think the issue is the pulldown being in a modal popup panel.

With EnableDropDownAsChild set to False, when I clicked on the pulldown arrow, the scrollbars for the screen showed but I couldn't find the actual pulldown items.

I should also mention that a WebCombo works fine, but I was hoping to replace it with the WebPullDown.

thanks
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Alexander Todorov posted over 15 years ago

Hi,

you can try setting the DropDownContainerHeight property to some fixed value, like 200px , although in general it should work well without it. Please let me know if this works for your scenario. Also , there is the EnableDropDownAsChild property (taking true / false values) , which controls whether the dropdown container element will be a direct first child of the source element - in the DOM ; or will be detached from it, absolutely positioned and its position calculated as soon as the container is about to be opened.

Any other feedback you may have for the WebDropDown component is welcome - Does it suit your needs? If you feel specific features could be improved, modified, or added, please let us know.

Thanks very much,

Angel
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