Introduction
Cookies are one of the simplest ways to persist small pieces of data between requests in ASP.NET, yet they’re often misunderstood or implemented inconsistently. Whether you’re storing user preferences, tracking the last selected database, or managing lightweight session helpers, cookies give you a fast, reliable mechanism without involving server resources. This article walks through the essentials—how to set a cookie, how to read it safely, and how to delete it when it’s no longer needed—using clean, practical VB.NET examples you can drop directly into your application.