Different Cache Usage in Aspx. CS and XXX. CS

In normal Aspx. CSCodeYou can use:

Cache cache = new cache ();

However, in XXXX. CS, the following method cannot be used:

Never expire

Httpcontext. Current. cache. insert ("name", "Wang Xiang", null, datetime. maxvalue, timespan. Zero, cacheitempriority. notremovable, null );

Name: Key

Wang Xiang: Value

Null: indicates no cache dependency

Datetime. maxvalue: the maximum value of the time (9999-99-99 12:59:59), indicating that the absolute time expiration policy is not used.

Timespan. Zero: indicates that smooth expiration is not used.

Cacheitemprority. notremovable: indicates that the priority is not to delete the cache.

Null: Not very useful. Just null

 

Absolute Time expired (automatically expired 10 seconds later)

Httpcontext. Current. cache. insert ("name", "Wang Xiang", null, datetime. Now. addseconds (10), timespan. Zero, cacheitempriority. notremovable, null );

 

Smooth expiration time (automatically expired if the cache is not accessed for 10 consecutive seconds)

Httpcontext. Current. cache. insert ("name", "Wang Xiang", null, datetime. maxvalue, timespan. fromseconds (10 ));

 

Cache update policy

If (httpcontext. Current. cache ["usercachelist"]! = NULL)
{< br> ht = (hashtable) httpcontext. current. cache ["usercachelist"];
ht. add (UID, httpcontext. current. cache ["user" + uid]);

}
Else
{
Ht. Add (UID, httpcontext. Current. cache ["user" + uid]);
// Httpcontext. Current. cache ["usercachelist"] = HT;
Httpcontext. Current. cache. insert ("usercachelist", HT, null, datetime. maxvalue, timespan. Zero, cacheitempriority. notremovable, null );
}