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AddOrGetExisting(string,object,DateTime,string) Method

Summary

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#
VB
C++
public virtual object AddOrGetExisting( 
   string key, 
   object value, 
   DateTime absoluteExpiration, 
   string regionName 
) 
Public Overridable Function AddOrGetExisting( 
   ByVal key As String, 
   ByVal value As Object, 
   ByVal absoluteExpiration As Date, 
   ByVal regionName As String 
) As Object 
public:  
   virtual Object^ AddOrGetExisting( 
      String^ key, 
      Object^ value, 
      System::DateTime absoluteExpiration, 
      String^ regionName 
   ) 

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.

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

Help Version 20.0.2019.3.11
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Leadtools.Caching Assembly