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One of the most important security principles for software development is least privilege. Simply put, least privilege means that an application, process, or user should have the least access to resources required to accomplish a task and no more. By following this principle, even if your application is attacked or a user goes on the payroll of your nastiest competitor, you'll have limited the potential damage. Bottom line: implementing partial trust in ASP.NET is the single biggest thing you can do to make your applications secure.

On November 19, 2007, Microsoft officially released the ASP.NET version 3.5 and Visual Studio 2008. Like with the progression from ASP.NET 2.0 to 3.0, the features in ASP.NET 3.5 are additive, meaning that the core assemblies installed from the .NET Framework version 2.0 are still used by the 3.0 and 3.5 versions. The In short, ASP.NET 3.5 doesn't change or take away or break any functionality, concepts, or code present in 2.0 - it simply adds new types and features and capabilities to the framework.

This article provides an overview of the new features in ASP.NET 3.5 and the new web/ASP.NET-related features in Visual Studio 2008.

Over the past several years web developers have started using JavaScript to make asynchronous postbacks to the web server that only transmit and receive the necessary data; these techniques are commonly referred to as AJAX. Microsoft has released a free AJAX framework for ASP.NET developers named Microsoft ASP.NET AJAX. This article series examines using Microsoft's ASP.NET AJAX framework to build responsive user interfaces.

Since AJAX involves many disparate technologies at different layers in the networking stack, implementing AJAX without the use of an AJAX framework is difficult and error-prone. Fortunately, Microsoft has released a free AJAX framework for ASP.NET developers: Microsoft ASP.NET AJAX. This article is the first in a series of articles that examines the ASP.NET AJAX framework. This installment provides an overview of AJAX technologies and looks at getting started with Microsoft's framework. Future installments will focus on specific controls and scenarios..

Hard coding passwords into your application or your web site is a bad thing. Barry looks at how we can use trusted connections to provide the authentication we need, without the need for these potential security hazards.

"Web application development has come a long way in a fairly short period of time." A quote like that surely won't send anyone into shock anytime soon because it's accepted as fact. From basic, static HTML pages to totally data-driven and data-centric Web applications, the demands on a Web developer are much more complex and demanding than they were just a few years ago. The advent of social networking sites like MySpace, which is written in ASP.NET 2.0, interactive mapping sites, and sites streaming full motion video has required the Web developer to adapt and change with the times. One of the best tools to use to build these types of Web applications is Microsoft's ASP.NET 2.0. In this article I am going to delve into some of the more interesting features of ASP.NET 2.0 and show you how you can begin using ASP.NET 2.0 on your next Web project.

Learn how to use AOP injection techniques to add, remove, and modify logging, validation, caching, exception handling, authorization, and performance measurements in your ASP.NET applications—without having to recompile your code.

In .NET Web applications you can find that in many places custom classes and collections are better choices than the DataSet or DataTable. The custom classes or the custom class collections, which are truly object oriented, allow developers to employ all object-oriented programming techniques.

Unfortunately, .NET Framework and Visual Studio 2005 don’t provide good support of the custom class. As a result, developers often encounter the following three barriers around using the custom class.

DataSet and DataTable are Microsoft’s solutions to these problems. Microsoft provides lots of built-in support of DataSet and DataTable in their development tools and in the .NET Framework library. But the DataSet and DataTable are far from object-oriented. Besides, they have lots of overhead.

The latest version of ASP.NET, version 2.0, supports several new and exciting features that promise to enhance developer productivity, administration and management, extensibility, and performance. One of these features is precompilation, which either developers or administrators can use to precompile ASP.NET applications before they are deployed. Moreover, the new precompilation feature can detect and provide warnings about any compilation failure issues, and lets you deploy applications without the need to store the source code on the deployment server. Precompilation can both reduce application response time and improve performance. This article explains how to use the new feature effectively.

In the past year, new technologies from Microsoft have changed how we can add ink to Web sites and the change is definitely for the better! One small property added to ASP.NET 2.0 server controls, OnClientClick, has had a big impact on simplifying the process of moving ink from the Web page to the Web server. The capability that OnClientClick provides, allowing developers to tie both a client-side event and a server-side event to one Click event, was actually achievable prior to ASP.NET 2.0 using control attributes, but it was more complex to set up and not very discoverable..