Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: Invalid postback or callback argument.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Çözüm Önerisi : Yukarıdaki gibi bir hata mesajı ile karşılaşıyorsanız
<pages enableEventValidation="false" /> yaparak sorununuzu çözebilirsiniz.