User controls inside an UpdatePanel - css styles are gone when updating (IE8)

Question

I have an user control inside an UpdatePanel. Once an event is triggered and updates the user control - it seems to lose its css styles. This happened to me in IE8 only, whi

Answer 1

I had similar problem.
I solved it moving css from the to the

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Since I use a MasterPage and I don't want the link in all pages, I found useful putting a ContentPlaceHolder in the MasterPage's Header

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and then the link inside the desired page: