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Question 25   What is absolute and sliding expiration

Absolute expiration – in absolute expiration caching, cache object will be expired after the time set to this. for example if the time set is 5 minute, in every 5 minute cache object will be expired.

sliding expiration – in sliding expiration, if an object in cache is not accessed with in the specified time cache will be expired. when accessed it’s life will be extended for the same period again.



Question 26   What is cross page posting

The process of submitting values from one .aspx page to another .aspx page is called cross page posting in asp.net. we can achieve cross page posting by setting postbackurl property of button




Question 27   How to post to a different page

The process of submitting values from one .aspx page to another .aspx page is called cross page posting in asp.net. we can achieve cross page posting by setting postbackurl property of button



Question 28   How do we access viewstate value of this page in the next page

By default viewstate is available with in the same page only. but in cross page posting we can get the submitted page viewstate by using previouspage property of the page



Question 29   Can we post and access view state in another application

By default viewstate is available with in the same page only. but in cross page posting we can get the submitted page viewstate by using previouspage property of the page



Question 30   What is sql cache dependency in asp.net 2.0

Dependencies are used in caching to invalidate a cache after a change in the depending object/source.
in sql cache dependency caching object will be associated with a table or a query. any change in the table or query result will invalidate the cache object. sqlcachedependency is a sealed class which cannot be inherited.




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