Session Problem

One way to handle these things is to handle whether object is null or not,

if(Session["key"] != null) {
   var data = Session["key"]; // You may need to cast it first
}

This way application would only use the variable if it exists.

Raja T11y ago

Hi Ankit, Your Session was expired or session value(data) is empty. so that show error "object reference error". Please check your session contains value(data) or not on the page?

Francis Susaimichael11y ago

Sounds like that particular session value is dropped somewhere between the operation. If possible post your code, that will result a quicker solution.