Leverage an HTTP handler to display database images in an ASP.NET DataList

摘要

If you've created a website with ASP.NET, odds are you've had at least some exposure to ADO.NET, the new data access framework that lets you retrieve, display, and update information. Most ASP.NET developers have learned the basics of the core ADO.NET classes (Connections, Commands, DataSets, etc.). Using these objects, it'sfairly easy to design a web page that extracts information (such as a catalog of products) and displays it in a web page. But life isn't as straightforward if you need to interact with binary fields that contain image data. Retrieving this data in an ASP.NET web page is fairly easy, but displaying it isn't as simple. In this article, you'll learn how to translate the binary image data in your database into an image that you display in a web page, or even bind to one of .NET's data web controls.