The state information is invalid for this page Error

Question

Hi Friends  Am Getting Following Error on my ASP.NET C# Page Button Click event The state information is invalid for this page and might be corrupted. i've Added if (Request.Browser.Browser == Firefox) { Response.Cache.SetNoStore(); } And in Web.Config viewStateEncryptionMode=Never then also am getting error what Problem why this error Occuring to me Regards.... R.V.Rajagopalan

Rajagopalan R V · Answer

Hi Mr. Suthish Nair... Thanq For ur Reply the Trace log is Mentioned Below and i've Enabled Event Validation Also then Also am Getting Same Error Log Entry : 4/27/2015 11:16:39 AM Error in: http://localhost:1666/Web/Form/Test.aspx System.FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character more than two padding characters or a non-white space character among the padding characters. at System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter String serializedState) at System.Web.UI.HiddenFieldPageStatePersister.Load() - mscorlib Regards.... R.V.Rajagopalan

Gowtham Rajamanickam · Answer

Microsoft expression: http://www.codeproject.com/Articles/285964/WPF-Webcam-Control

Suthish Nair · Answer

It can be of different reasons. If you share the trace log then we can have a look. Also try enabling Event Validation etc but not recommended. Or do some research on this topic.