In __ExtenderControlBase.cs : 281__
__RegisterLocalization()__ is called also if AjaxControl Toolkit isn't used on the current page.
This will result in an Javascript error:
"Uncaught TypeError: Cannot read property 'UI' of undefined"
Comments: exactly. So i have found following, maybe this causes the problem. We have registered AjaxControlToolkit in web.conf for every page, but on some pages we don't use any control of it directly. <pages> <controls> <add tagPrefix="spring" namespace="Spring.Web.UI.Controls" assembly="Spring.Web" /> <add tagPrefix="AjaxControlToolkit" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" /> </controls> </pages>
__RegisterLocalization()__ is called also if AjaxControl Toolkit isn't used on the current page.
This will result in an Javascript error:
"Uncaught TypeError: Cannot read property 'UI' of undefined"
Comments: exactly. So i have found following, maybe this causes the problem. We have registered AjaxControlToolkit in web.conf for every page, but on some pages we don't use any control of it directly. <pages> <controls> <add tagPrefix="spring" namespace="Spring.Web.UI.Controls" assembly="Spring.Web" /> <add tagPrefix="AjaxControlToolkit" namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" /> </controls> </pages>