c# - page theme causing "Failed to load viewstate." error -

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in web.config have following:

<pages theme="mytheme" enablesessionstate="true" validaterequest="false"  enableeventvalidation="false" viewstateencryptionmode="never"  enableviewstatemac="false">

as added theme property instantly started receive:

failed load viewstate. control tree viewstate being loaded must match control tree used save viewstate during previous request.for example, when adding controls dynamically, controls added during post-back must match type , position of controls added during initial request.

when remove theme, no longer viewstate errors. can offer inside happening or how fix it?

thanks.

fixed by:

  1. adding runat="server" , id attributes link (stylesheet)
  2. calling page.header.findcontrol("link").databind() in page_load method of master page.

do not call page.header.databind(); since databind entire header.


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