Saturday, 1 October 2011

20. What are benefits and limitations of using Viewstate for state management?


Benefits: no server resources are required because state is in a structure in the page code, simplicity, states are retained automatically, the values in view state are hashed, compressed, and encoded, thus representing a higher state of security than hidden fields, ViewState is good for caching data in Web frame configurations because the data is cached on the client.
Limitations:page loading and posting performance decreases when large values are stored because view state is stored in the page, although view state stores data in a hashed format, it can still be tampered because it is stored in a hidden field on the page. The information in the hidden field can also be seen if the page output source is viewed directly, creating a potential security risk.

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