I just installed Ajax Toolkit. The controls are available in my Toolbox, but when I insert them in a page, Visual Studio underlines them with the error message "unknown server tag".
I googled the problem and found several ideas :
check if the DLL is in Bin folder
check if ajaxToolKit tags prefix is registered in web.config and make sure I'm not using a different prefix in my pages
check if the DLL is registered in the pages with <% # Register ... %>
Unfortunately all of this is fine, but I still can't get the controls to work. Is something else missing ?
EDIT : My environment is ASP.Net 2.0, Ajax Extensions 1.0, Ajax Toolkit 1.0.20229, Visual Studio 2005
It sounds that you might have the wrong .Net version of the Ajax toolkit installed. Check http://ajaxcontroltoolkit.codeplex.com/releases/view/43475
I think its a bug and a bogus message that keeps coming time to time with Ajax control toolkit. Sometimes closing the VS and restarting helps. If that does not help, try removing the control toolkit and re-referencing again.
Related
I have a Visual Studio 2022 ASP.net application that now displays "Error Creating Control ajax Toolkit" when viewing the Page Design:-
The application references the AjaxControlToolKit:-
And the path is pointing to the Ajax install path:-
The application builds and runs but when viewing the design page I get the "Error Creating Control" messages.
This seems to have started very recently.
Any ideas why?
tia
Just to add to my original question It appears that the "Web Live Preview" was the issue.
I set the option back to "Legacy Web Forms Designer" and it seems ok.
I found this similar post here
I have been programming a web forms application using VS2015.
All of a sudden an error form starts popping up for Exceptionless.Extras has encountered a problem and needs to close.
Then asking me to send to submit a report Exceptionless.Extras Error dialog image
To my knowledge I have not added any packages for this control. Checking Tools and NuGet for Exceptionless shows nothing installed
How do I get rid of this?
Any help would be greatly appreciated
I work for CodeSmith Tools on CodeSmith Generator as well as the Exceptionless Project. This could be caused by an unhandled Visual Studio exception that's being picked up by the CodeSmith Generator add-in or a third party add-in which uses Exceptionless. If you have Generator installed. I'd recommend submitting the exception with your email address and contact support and we'll take a look into the exception. Also, we can let you know how to disable this dialog if you have CodeSmith Generator installed.
Gives me this error on Design View but it works in Code View and in Code-behind.
Wat may be the reason? I have an old .dll of Telerik
I'm using Visual Studio 2010. I havent used any installation of Telerik.
I copy "Telerik.Web.UI.dll" into Bin directory then add reference to my project
I have only 1 dll ("Telerik.Web.UI.dll" ) do I need other dll's as well to be able to work on Design View
I think that you must install Telerik controls to be able to use them in designer.
AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll.
Izvorna datoteka: http://dostavahrane.si/ScriptResource.axd?d=OdsYNSuXxjlt8rcl-C-veHyjBYioAGFje3gsHih3su6oLU1jX125fdCipsztHIubjtFptWsSrTvzlMvPBfnnMGfz62_ByInZiFjjOCVmrpHz8bozy1q4kx6vPqQyelCTItLxGQ2&t=245582f9
i am using AjaxControlToolkit for .net 3.5 in VS 2008. Why i get this error. Must i downgrade it?
I downlaod it from here:
http://www.asp.net/ajaxlibrary/AjaxControlToolkitSampleSite/
I got such error once in one of my projects and since I didn't find a cause, I did what the exception message says - instead of ASP.NET ScriptMessage, I've put Toolkit's Script Manager on the page.
It probably is only a workaround but follow it if you won't find any other solution.
i have a web application and in this i am using ajax controls.
due to some problem i remove the reference of ajaxcontroltoolkit and reset the toolbox of visual studio. After some i again add reference of previous ajaxcontroltoolkit and add tab in visual studio toolbox.
Now problem is that when i insert the control of newly installed ajaxcontroltoolkit and run the webapplication the no event(which is in update panel) or no ajax validation fire.
so please help what should i do
lot of time i try and remove and add reference of ajaxcontroltoolkit but not working.
Try manually deleteing the AjaxToolkit.dll file from your Bin directory.