Dear All,
 i am using asp.net2.0 , C# 
 i have a form with different Tab. i need to keep in memory(not in database) data of every tab when user go to other Tab. and display same data when he comes back to same tab
i did it made properties of every tab and then saved it in class in session..
i want to know it there other perfomance driven techniques available
Plea guide 

you can use sessions if you don't have to store heavy objects like datasets with more data / datatables with more data.
You can use caching techniques if you want to improve the performance a little bit.
As alternate Check this link how you can split data and access between tabs:
http://blogs.techrepublic.com.com/programming-and-development/?p=493
Thanks,