Do you know that? Freelancers in their 60s placed a high priority on the ability to work from anywhere next

Define ViewState in ASP.NET

It allows the state of objects (serializable) to be stored in a hidden field on the page.
It is transported to the client and back to the server, and is not stored on the server or any other external source.
It is usedto retain the state of server-side objects between postbacks.