AddOrGetExisting<T>(String,T,DateTime,String) Method

Adds an entry using key and value pair and absolute expiration date into the cache, and returns an existing cache entry with a matching key.

Syntax

C#
Visual Basic
Objective-C
Java
C++

public override T AddOrGetExisting<T>( 
   string key,
   T value,
   DateTime absoluteExpiration,
   string regionName
)

'Declaration

Public Overloads Overrides Function AddOrGetExisting(Of T)( _
   ByVal key As String, _
   ByVal value As T, _
   ByVal absoluteExpiration As Date, _
   ByVal regionName As String _
) As T

'Usage

Dim instance As FileCache
Dim key As String
Dim value As T
Dim absoluteExpiration As Date
Dim regionName As String
Dim value As T
 
value = instance.AddOrGetExisting(Of T)(key, value, absoluteExpiration, regionName)

@Override
public <T> T addOrGetExisting(String key, T value, Class<?> classOfT, Date absoluteExpiration, String regionName)

public:
T^ AddOrGetExistinggeneric<typename T>
( 
   String^ key,
   T^ value,
   DateTime absoluteExpiration,
   String^ regionName
) override

Parameters

key: Unique identifier of the cache item.
value: Data for the cache item.
absoluteExpiration: Absolute expiration date to use.
regionName: Optional name of a region in cache.

Type Parameters

T

Return Value

The previous cache entry that matches the specified key, if found. If the cache contains an item with the same key, then it will be returned before it is overwritten. Otherwise, null.

Requirements

Target Platforms

Reference

FileCache Class
FileCache Members
Overload List