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Hello,

on post back we are facing below error only on IE8 and not in IE9, FireFox -
Failed to load viewstate. The control tree into which viewstate is being loaded must match the control tree that was used to save viewstate during the previous request.

Refer below details about ASP.NET 3.5 Web Application.
1. We have previously project structure as below-
"TestProject" is Web Project:
page1.aspx
page2.aspx
page3.aspx

"Sample2" is folder and it is part of TestProject Web Project :
page4.aspx

2. Modified project structure-
"TestProject"(Web Project)
"AllPages" is folder part of TestProject Web Project:
Page1.aspx
Page2.aspx
Page3.aspx
Page4.aspx


Please suggest solution.

Thanks.
Posted 19-Sep-12 5:23am
Comments
aidin Tajadod at 19-Sep-12 18:51pm
   
do you change viewstate in you code?
callsatish@gmail.com at 20-Sep-12 3:17am
   
thanks for your attention.
We have not changed viewstate in code.
aidin Tajadod at 20-Sep-12 13:43pm
   
I don't have any particular problem like this with IE8.
Please share some codes.

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