Defines a callback method for notifying applications when an item
is updated in the Cache.
Namespace: Alachisoft.NCache.Web.CachingAssembly: Alachisoft.NCache.Web (in Alachisoft.NCache.Web.dll) Version: 4.1.0.0 (4.1.0.0)
Syntax
C# |
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public delegate void CacheItemUpdatedCallback( string key ) |
Visual Basic |
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Public Delegate Sub CacheItemUpdatedCallback ( _ key As String _ ) |
Visual C++ |
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public delegate void CacheItemUpdatedCallback( 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 CacheItemUpdatedCallback class to notifiy
an application when an item is updated in 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.
CopyC#
public void OnItemUpdated(string k) { // ... } protected void Application_Start(object sender, EventArgs e) { try { NCache.InitializeCache("myCache"); NCache.Cache.ItemUpdated += new CacheItemUpdatedCallback(this.OnItemUpdated); } catch(Exception e) { } }