Which type if caching will be used if we want to cache the portion of a page instead of whole page?

If you want to cache only a portion of a page rather than the entire page in ASP.NET, you would typically use “Partial Page Caching” or “Fragment Caching.”

Partial Page Caching allows you to cache specific regions or controls within a page, rather than caching the entire page. This can be useful when certain parts of the page are dynamic or frequently changing, while others remain static.

In ASP.NET, you can implement partial page caching using techniques such as:

1. User Controls (ASCX): You can create user controls for the portions of the page you want to cache and then apply caching directives to those user controls.
2. OutputCache Directive: You can use the OutputCache directive to cache the output of specific sections of a page. This directive can be applied to individual user controls or sections of ASP.NET markup.

Here’s an example of using the OutputCache directive in ASP.NET markup to cache a specific portion of a page:

This directive instructs ASP.NET to cache the output of the user control or page fragment for 60 seconds (Duration="60") without varying the cache based on any parameters (VaryByParam="None"). You can customize the caching behavior further based on your requirements.

By using Partial Page Caching, you can improve the performance of your ASP.NET applications by caching only the parts of the page that are expensive to generate or relatively static, while still ensuring that dynamic content is rendered fresh for each request.