ObjectCache::AddOrGetExisting Method (String^, Object^, DateTimeOffset, String^)
.NET Framework (current version)
When overridden in a derived class, inserts a cache entry into the cache, by using a key, an object for the cache entry, an absolute expiration value, and an optional region to add the cache into.
Assembly: System.Runtime.Caching (in System.Runtime.Caching.dll)
public: virtual Object^ AddOrGetExisting( String^ key, Object^ value, DateTimeOffset absoluteExpiration, String^ regionName = null ) abstract
Parameters
- key
-
Type:
System::String^
A unique identifier for the cache entry.
- value
-
Type:
System::Object^
The object to insert.
- absoluteExpiration
-
Type:
System::DateTimeOffset
The fixed date and time at which the cache entry will expire.
- regionName
-
Type:
System::String^
Optional. A named region in the cache to which the cache entry can be added, if regions are implemented. The default value for the optional parameter is null.
Return Value
Type: System::Object^If a cache entry with the same key exists, the specified cache entry's value; otherwise, null.
This AddOrGetExisting(String^, Object^, DateTimeOffset, String^) method overload returns an object value, not a CacheItem object.
.NET Framework
Available since 4.0
Available since 4.0
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