Getting error as Invalid length for base 64 array

Question

Hi, Below is the stack trace: message: 'An unhandled exception occurred.' -------------------------- Stack Trace ------------------------------- System.FormatException: Invalid length for a Base-64 char array. 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() -------------------------End Stack Trace ----------------------------- I dont know what is causing this. I am using viewstate to have almost 17k records and later using this in a grid display function. Help to resolve.

Ms_ Dev · Answer

splitting into 3k wont work, it will add additional load which will impact perfomance of the page. have to comeup with something else.

Salman Beg · Answer

So they are allowing upto 3k and if you want to convert 17k records then in that case you need to split 17k records into each 3k slot and you need to Convert 3k in a loop. thanks.

Ms_ Dev · Answer

for records upto 3k it is working but it is failing in 17k case.

Salman Beg · Answer

I think as you are using 17k records so that is causing the issue. And it is unable to Convert a very large amount of data to Base64String. So can you please check with few records like 10-100 whether it is showing any error or not. thanks.

Getting error as Invalid length for base 64 array

Answers (4)