Name
AddCacheItemDependencies
Synopsis
Response.AddCacheItemDependencies(ByVal cacheKeys As ArrayList)
Adds a list of cache keys contained in an ArrayList to the list of Cache item keys upon which the output cache of the current response depends. If one of the cache items identified by the keys is modified, the output cache of the current response will be invalidated and a fresh response will be generated.
Parameters
-
cacheKeys An ArrayList containing one or more Cache item key names.
Example
The example shows how you can use the AddCacheItemDependencies method to set a number of cache keys as dependencies for the output cache of the current response. If any of the cache items represented by these keys is modified, the output cache is invalidated and the page is refreshed by using Response.Redirect.
<%@ Page Language="vb" %> <%@ OutputCache Duration="300" VaryByParam="None" %> <html> <head> <title>Adding cache dependencies in ASP.NET</title> <script runat="server"> Sub Page_Load( ) Dim myArrayList As New ArrayList myArrayList.Add("Key1") myArrayList.Add("Key2") Response.AddCacheItemDependencies(myArrayList) Message.Text = DateTime.Now.ToString( ) End Sub Sub Button1_Click(sender As Object, e As EventArgs) Cache("Key1") = "foo" & DateTime.Now.ToString( ) Response.Redirect("AddCacheItemDependencies.aspx") End Sub Sub Button2_Click(sender As Object, e As EventArgs) Cache("Key2") = "bar" & DateTime.Now.ToString( ) Response.Redirect("AddCacheItemDependencies.aspx") End Sub </script> </head> ...Get ASP.NET in a Nutshell now with the O’Reilly learning platform.
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