In reality, this is standard HTML functionality and nothing specific to ASP.NET. The same effect of auto-refresh would be seen whether it is an ASP.NET page or just a HTML page, or a page made in Java, PHP, ColdFusion, Perl or the like.
More Preferential for Asp.net Developers
If you want to set the refresh time dynamically then that can be done in ASP.NET by adding server side code in the Page_Load function to set it, as shown below:
you can change the refresh time according to your requirement.
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