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In this tip, Author demonstrates how to take advantage of the validators from the System.ComponentModel.DataAnnotations namespace in an MVC application. You can take advantage of these validators to validate form data before submitting the form data into a database.

A dizzying array of new controls came along with the release of ASP.NET 2.0. Thankfully, the learning curve is not as steep with its successor (ASP.NET 3.5), as only a handful of new controls are included this time around. Read more..

In this article author demonstrates quickly how to develop custom validation control that enables to specify certain controls to be validated so that input in any of controls passes validation but if all of controls are empty, validation fails.

Brian Mains overviews the client portion of the ASP.NET AJAX framework.

You can use SqlBulkCopy to transfer Excel Spreadsheet data at high speeds to a SQL Server Database Table.

Anybody that codes a script that accepts user input and inserts data into a sql database must make sure the database's integrity is protected. I have read book that teach PHP that don't even address this necessary, critical subject. Imagine the valuable data in your databases is butchered or even wiped out completely. Is your database safe from SQL injection attacks?

Instead of using a FORM and requiring the user to explicitly submit it to transmit information back to the server, Ajax lets you perform such requests seamlessly at any time, using data that don't necessarily come from form elements, then get the result back without refreshing the page ...

So you're still using Classic ASP, but need to implement some AJAX effects. To get started, its so much easier than you think (view the demo). You'll need a basic knowledge of Javascript and Classic ASP to build your first AJAX enabled page.

A useful set of Ajax Interview Questions in ASP.NET