Defines a callback method for notifying applications when an item is added to the Cache.

Namespace: Alachisoft.NCache.Web.Caching
Assembly: Alachisoft.NCache.Web (in Alachisoft.NCache.Web.dll) Version: 4.3.0.0 (4.3.0.0)

Syntax

C#
[ObsoleteAttribute("This delegate is deprecated. 'Please use CacheDataNotificationCallback(string key, CacheEventArg cacheEventArgs)'", 
	false)]
public delegate void CacheItemAddedCallback(
	string key
)
Visual Basic
<ObsoleteAttribute("This delegate is deprecated. 'Please use CacheDataNotificationCallback(string key, CacheEventArg cacheEventArgs)'", 
	false)> 
Public Delegate Sub CacheItemAddedCallback ( 
	key As String
)
Visual C++
[ObsoleteAttribute(L"This delegate is deprecated. 'Please use CacheDataNotificationCallback(string key, CacheEventArg cacheEventArgs)'", 
	false)]
public delegate void CacheItemAddedCallback(
	String^ key
)

Parameters

key
Type: System..::..String
The cache key used to reference the item.

Remarks

Since this handler is invoked every time an item is removed from the Cache, doing a lot of processing inside the handler might have an impact on the performance of the cache and cluster. It is therefore advisable to do minimal processing inside the handler.

Examples

The following example demonstrates how to use the CacheItemAddedCallback class to notifiy an application when an item is added to the application's Cache object. You could include this code in a code declaration block in the Web Forms page, or in a page code-behind file.
 Copy imageCopy
public void OnItemAdded(string k)
{
    // ...
}

protected void Application_Start(object sender, EventArgs e)
{
    try
    {
        NCache.InitializeCache("myCache");
        NCache.Cache.ItemAdded += new CacheItemAddedCallback(this.OnItemAdded);
    }
    catch(Exception e)
    {
    }
}

See Also