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When I have a combobox that is initially hidden and only gets displayed once a radio button is clicked, the drop down button disappears as soon as the user selects something. Thereafter the user can still use the up and down arrows on the keyboard to select different items, but they can no longer see the drop down.
I created a simple sample of WebCombo based on your scenario.
In the sample, I have a WebCombo with its Visible property set to False; and an ASP.NET RadioButtonList with two ListItem: “Hide WebCombo” and “Show WebCombo”. On SelectedIndexChanged, the Visible property of WebCombo is set (to True or False) based on the selected item text of RadioButtonList.
Everything works as expected when render this sample (with the latest build version of WebCombo 6 and WebUI.NET Framework 3.0) on Chrome 35 browser. The drop down button of WebCombo doesn’t disappear after user select something.
I enclose my sample as attachment. Please have the sample evaluated on your and let me know response.
Hi Yudi,
This is Adrian, we just exchanged emails about the firefox issue. I just noticed similar issue with IE9, but the combo was not initialy hidden. it is the only control on the page. Click one and it opens the list and then the image kind of shrinks to 1mm almost invisible and only if you click that tiny line that is the button it opens the list.
Thank you,
Adrian
Hello,Please kindly try to add “OnShowDropDown” client side event to your WebCombo.And then add / use “DoResize()” method in that event.Here’s the example snippet code regarding “DoResize()”:
function WebCombo1_OnShowDropDown(controlId, left, top, width, height){ var WebCombo = ISGetObject(controlId); WebCombo.DoResize(); return true; }
Hope this helps.Regards,Hans K.
Hello hans,
Thank you for your message. I added the script you mentioned, I added an alert to show when it is called, but it did not solve my problem. I even copied exactly one combo from the online samples and it behaves the same, the dropdown button just disapears.
Any other ideas?
Hello everyone,
I think I figured it out, the problem comes from missing xmlns, so if the html tag looks looks like
<html xmlns=http://www.w3.org/1999/xhtml>
it works fine, if i take out the xmlns the dropdown button disapears in IE11. I have the HTML5 doctype.
Yudi, could you explain please this behaviour?
I tried to reproduce the problem reported by Adrian Mateescu on August 14, 2014 (the drop down button is disappear as soon as selects something in IE 9 browser) by using the live sample of WebCombo, BindAccess.aspx. The detail step is as follow:
The above sample uses HTML5 doctype. Could you please confirm whether you have set RenderingMode of WebCombo to HTML5?
<ISWebCombo:WebCombo ID="WebCombo1" runat="server" DataSourceID="AccessDataSource1" DataTextField="ContactName" DataValueField="CustomerID" Height="20px" Width="200px" UseDefaultStyle="True" RenderingMode="HTML5"> </ISWebCombo:WebCombo>
Please feel free to let me know if you find anything that I might miss during my attempt to reproduce the problem.
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