I am creating a master page and then adding a content page to it. when i place controls(tags) like update panel or table or textbox or label in the content page(within the content tags) i get a red line under all the tags in that page. when i move my mouse over it, it says "Element UpdatePanel is not a known element This can occur if there is a compilation error in the website" . I have tried all possible alterations but in vain. please help me out. many thanks

Regards,
Sripa.

Hi,

 1- Did you try to use the same code in another page ??

 2- Send me the code of the master page to check it

 Thanks

Ali Naeem

hi..
i got the same errors but now it is working even with that error.
but in my case i have also installed AJAX toolkit. therefore it was giving me the error like u.

if same is the case with u thn just uninstall everything and then install ajaxext first then toolkit.

but after one day again the same problem. but wen i run the project its working normally.

did you all have the last version of ajax installed??

also did you register all the extensions in the web.config??

Updatepanel is not an asp.net control.. is an Ajax control...

HTH

Gonzalo

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