ViewState is a collection of Key-Value pairs, where Key is of type String and Value is of type Object. But only those objects which are marked as Serializable can be stored in ViewState.ViewState cannot be programmed on the client in javascript because the value of it is encrypted before it is rendered to the browser.
Like ViewState, HiddenField is also used for managing the state of the client in round trips to the same web form.ViewState is managed by Page framework but HiddenField has to be coded by us.It can store data which is of type string and cannot store serializable custom objects unlike ViewState.The value of HiddenField can be programmatically set on the client using Javascript, the same can be retrieved from the server from the HiddenField object
The communication between web server and web browser on the internet is done using HTTP protocol.HTTP is a W3C specification.HTTP Protocol is the safest protocol on the internet.HTTP is a stateless protocol. This is because it doesn’t know whether the request that has been made is part of an ongoing correspondence or just a single message.
ASP.NET is a framework used for development and execution of wweb-basedapplications using MS.NET framework.
