How do you handle session state and view state in ASP.NET?

For session state, ASP.NET provides various modes like InProc, SQLServer, and StateServer, allowing data to be stored either in-process, in a SQL Server database, or in a separate state server process. View state, on the other hand, is used to persist page and control values between postbacks. However, it can increase page size, affecting performance. Proper management of these states is essential based on the application's needs.