ASP.NET 4 Unleashed

Using Post-Cache Substitution

In some cases, you might want to cache an entire page except for one small area. For example, you might want to display the current username dynamically at the top of a page but cache the remainder of a page. In these cases, you can take advantage of a feature of ASP.NET Framework called post-cache substitution.

Post-cache substitution is used internally by the AdRotator control. Even when you use Page Output Caching to cache a page that contains an AdRotator control, the content rendered by the AdRotator control is not cached.

You can use post-cache substitution either declaratively or programmatically. If you want to use post-cache substitution declaratively, you can use the ASP.NET Substitution control. For example, ...