there's no border around the drop down

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ComboBox DropDownList
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scott asked on 19 Oct 2022, 11:06 AM

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I've recently able to finally got this upgraded and are now in the same versions between the 3 dlls.  Please see what you can recommend how I can fix the issue below.  The one on the left is the upgrade version.  Please notice that there's no border around the drop down.

I have the following in the config (not complete but just related to Telerik and I've also changed to Default in the Telerik.Skin to no avail):


<add key="Telerik.Skin" value="Windows7" />
<add key="Telerik.ScriptManager.TelerikCdn" value="Enabled" />
<add key="Telerik.StyleSheetManager.TelerikCdn" value="Enabled" />

	<add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false" />
	<add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" />
	<add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" />
	<add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false" />
	<add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" />
	<add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" />
	<add name="RadCompression" type="Telerik.Web.UI.RadCompression" />
<sessionState timeout="180" />
<modules runAllManagedModulesForAllRequests="true">
	<remove name="RadUploadModule" />
	<add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode" />
	<remove name="RadCompression" />
	<add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode" />
	<remove name="ChartImage_axd" />
	<add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" />
	<remove name="Telerik_Web_UI_SpellCheckHandler_axd" />
	<add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" />
	<remove name="Telerik_Web_UI_DialogHandler_aspx" />
	<add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" />
	<remove name="Telerik_RadUploadProgressHandler_ashx" />
	<add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" />
	<remove name="Telerik_Web_UI_WebResource_axd" />
	<add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" />
	<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
			<assemblyIdentity name="Telerik.Web.UI" publicKeyToken="121fae78165ba3d4" culture="neutral" />
			<bindingRedirect oldVersion="" newVersion="2011.2.712.35" />


Thank you very much for your time!

1 Answer, 1 is accepted

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Valentin Dragnev
Telerik team
answered on 21 Oct 2022, 01:09 PM

Hello Scott,

Usually, appearance issues are caused by the lack of Styles, Custom Styles that override the built-in ones, JavaScript errors, etc.

Here are a few suggestions to troubleshoot this issue:

  1. The RenderModes could be one of many reasons. Different renderings of the Controls load different CSS Stylesheets that could cause a conflict in styling the component.
  2.  Custom/External CSS Styles - It is possible to override the built-in Styles by using Custom CSS which may make some unexpected changes. If you have custom/external CSS stylesheets loaded on the page, try removing them temporarily and testing the application again.
  3. JavaScript errors - often JavaScript exceptions could prevent other scripts from rendering the Controls successfully, thus resulting in a broken appearance. To troubleshoot that, open the browser's dev tools and monitor the Console tab to spot any potential JavaScript errors. For tips and tricks you can check out the following Blog posts:

If the above suggestions did not help, please share the following information:


Based on that information we will try to replicate the problem locally and investigate the issue.


I look forward to your reply.



Valentin Dragnev
Progress Telerik

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ComboBox DropDownList
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