ErrorMessage: Unable to validate data.

[Diffident]

Guys,

Does anyone have any clues about this stack trace? What can be the reason
for this error?

Is it something related to viewstate? Can I do anything at the
application-level by making code changes to prevent this happening again?

This error pops out when I click a particular button.....but error is not
persistent in all the cases it is sporadic and happens once in 6-7 times
which makes it difficult to track the root cause and debug.

Please find the "Stack trace" below....

----------------------------------------------------------------------------------------------

ErrorMessage:
----------------
Unable to validate data.

ErrorSource: System.Web

ErrorTargetSite:
----------------
Byte[] GetDecodedData(Byte[], Byte[], Int32, Int32, Int32 ByRef)

ErrorTrace:
----------------
at System.Web.Configuration.MachineKey.GetDecodedData (Byte[] buf, Byte[]
modifier, Int32 start, Int32 length, Int32& dataLength)
at System.Web.UI.LosFormatter.Deserialize(String input)

PostData:
----------------
__EVENTTARGET: contacts:Button_Next
__EVENTARGUMENT:
__VIEWSTATE:
dDwyMzUxNDQ2ODt0PDtsPGk8MD47PjtsPHQ8O2w8aTwxPjtpPD Q+O2k8Nj47aTw3PjtpPDg+Oz47bDx0PDtsPGk8MD47PjtsPHQ8 O2w8aTwxPjs+.........

[bruce barker]

the message means the viewstate value is invalid. viewsource in the browser
and compare to waht is recieved on the server. some proxies will truncate
viewstate if its cover 2k.

-- bruce (sqlwork.com)
"Diffident" <Di*******@discussions.microsoft.com> wrote in message
news:B3**********************************@microsof t.com...
|
| Guys,
|
| Does anyone have any clues about this stack trace? What can be the reason
| for this error?
|
| Is it something related to viewstate? Can I do anything at the
| application-level by making code changes to prevent this happening again?
|
| This error pops out when I click a particular button.....but error is not
| persistent in all the cases it is sporadic and happens once in 6-7 times
| which makes it difficult to track the root cause and debug.
|
| Please find the "Stack trace" below....
|
| --------------------------------------------------------------------------
--------------------
|
| ErrorMessage:
| ----------------
| Unable to validate data.
|
| ErrorSource: System.Web
|
| ErrorTargetSite:
| ----------------
| Byte[] GetDecodedData(Byte[], Byte[], Int32, Int32, Int32 ByRef)
|
| ErrorTrace:
| ----------------
| at System.Web.Configuration.MachineKey.GetDecodedData (Byte[] buf,
Byte[]
| modifier, Int32 start, Int32 length, Int32& dataLength)
| at System.Web.UI.LosFormatter.Deserialize(String input)
|
| PostData:
| ----------------
| __EVENTTARGET: contacts:Button_Next
| __EVENTARGUMENT:
| __VIEWSTATE:
|
dDwyMzUxNDQ2ODt0PDtsPGk8MD47PjtsPHQ8O2w8aTwxPjtpPD Q+O2k8Nj47aTw3PjtpPDg+Oz47
bDx0PDtsPGk8MD47PjtsPHQ8O2w8aTwxPjs+.........

[Huzaifa Tapal]

Hello Bruce,

I did exactly what you asked and it seems like two viewstates are exactly
the same.

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I am getting this error after a Server.Transfer upon a PostBack. This does
not happen on my development box, only on the production windows 2003
machine. This seems to be happening recently as well because I had the same
site on another windows 2003 machine and it worked fine. But on a new one
its giving this problem.

Any help will be appreciated.

"bruce barker" wrote:

the message means the viewstate value is invalid. viewsource in the browser
and compare to waht is recieved on the server. some proxies will truncate
viewstate if its cover 2k.

-- bruce (sqlwork.com)
"Diffident" <Di*******@discussions.microsoft.com> wrote in message
news:B3**********************************@microsof t.com...
|
| Guys,
|
| Does anyone have any clues about this stack trace? What can be the reason
| for this error?
|
| Is it something related to viewstate? Can I do anything at the
| application-level by making code changes to prevent this happening again?
|
| This error pops out when I click a particular button.....but error is not
| persistent in all the cases it is sporadic and happens once in 6-7 times
| which makes it difficult to track the root cause and debug.
|
| Please find the "Stack trace" below....
|
| --------------------------------------------------------------------------
--------------------
|
| ErrorMessage:
| ----------------
| Unable to validate data.
|
| ErrorSource: System.Web
|
| ErrorTargetSite:
| ----------------
| Byte[] GetDecodedData(Byte[], Byte[], Int32, Int32, Int32 ByRef)
|
| ErrorTrace:
| ----------------
| at System.Web.Configuration.MachineKey.GetDecodedData (Byte[] buf,
Byte[]
| modifier, Int32 start, Int32 length, Int32& dataLength)
| at System.Web.UI.LosFormatter.Deserialize(String input)
|
| PostData:
| ----------------
| __EVENTTARGET: contacts:Button_Next
| __EVENTARGUMENT:
| __VIEWSTATE:
|
dDwyMzUxNDQ2ODt0PDtsPGk8MD47PjtsPHQ8O2w8aTwxPjtpPD Q+O2k8Nj47aTw3PjtpPDg+Oz47
bDx0PDtsPGk8MD47PjtsPHQ8O2w8aTwxPjs+.........

[Pallav Agrawal via DotNetMonster.com]

Hi,

I am facing the same problem. Did anyone findout what was the problem.

Thanks
Pallav.