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Old March 16th, 2006, 06:08 AM
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Default Strange Error !!!

Strange Error !!!

Help please.. i was testing my application today and i get this error message for the first time
and i don't know what i did wrong.. or what causing it.. i didn't get this error before
only today..the error is :

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. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.

please help me..it is driving me crazy.. because i tried to track it down using breakpoints but it didn't work

Regards,

Nina

Happy Programming :)
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Happy Programming :)
 
Old March 19th, 2006, 01:11 AM
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Nina,
This error occurs mostly when you are working with Dynamic controls, e.g. controls that you create at run time and add them to the Controls() array of your page (or form, or panel, etc). What this is saying is that you are either trying to remove controls from the control tree or add to them, and you cant do this as the viewstate doesnt match.

A good example of this is when you are working with datagrids where you edit the data inline (dg.edititemidex = e.item.itemindex) but you forget to call the dg.databind() method in the Method that calls the following code, if you try hitting the edit button, the error you are getting will be thrown.

If you are still having some problems post some source code and ill take a look at it for you.

-Regards

"The one language all programmers understand is profanity."
 
Old May 21st, 2006, 01:34 AM
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Hi I get the same error and the problem arises when I try to save the values of the form. The form consist of a datagrid that has the Edit functionality.

Any ideas how to fix the issue.

Simi





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