Effective error and exception handling in any kind of an application plays an important role in providing a pleasant experience to the user, when unexpected failures occur. This article talks about some effective error handling strategies that you can use in your projects.

Mutation testing is known for being difficult and expensive, but we’re here to show you a real-world system you can build in just a few hours with a little C# code and Visual Studio.

Project Katana lets you compose a modern Web application from a wide range of different Web technologies and then host that application wherever you wish. Howard Dierking presents a sample application to get you started.

The ability to debug code is a skill that every developer should have in their arsenal regardless of the technology they’re using. While many developers are accustomed to using Visual Studio .NET or Web Developer Express to debug ASP.NET applications that use VB.NET or C# code, some aren’t aware that it’s also extremely useful for debugging client-side code such as JavaScript. The same type of techniques used to debug .NET applications can also be applied to AJAX-enabled applications and more specifically ASP.NET AJAX applications.

This tutorial explores the principles of parameterized unit testing with Microsoft Pex 2010, which is a Microsoft® Visual Studio® add-in that provides a runtime code analysis tool for .NET Framework code.

Udi Dahan explains how his team identified and overcame unforeseen problems while developing a large-scale software + services trading application.

MonoTouch is a Mono based framework for building iPhone applications with C#. This article shows how to use it with the MonoDevelop IDE to quickly start building .NET-based iPhone applications.

The theory behind Ajax is simple - in the past, using a web site or application involved making a request from a server and waiting for the response to be rendered on the page before continuing. The problem occurs when the JavaScript coder has to handle parsing these diverse formats in creating a mashup, a task that JavaScript, as a simple scripting language isn't equipped for.

With this problem in mind, and with the inherent complexity of developing in JavaScript, tools vendors are coming up with toolkits that allow a server-side paradigm to be used in building Ajax applications. The theory is straightforward - technology such as JSP or ASP.NET has been used for years to allow this, where the application developer builds a server application that 'generates' HTML and JavaScript markup, which is then delivered to the client and executed. This technique fits neatly for the development of Ajax applications and there are a number of open source toolkits, such as Dojo, Google Web Toolkit, and Yahoo Ajax Library among others, that help to build Ajax applications. However, caution must be exercised with this approach, as it can lead to interoperability challenges. Consider the situation where a mashup application has to consume web services that run on different technology stacks. This is where the interoperability issues arise; the rest of this article will explore some of them.

Find out how to use finalizers as a way to warn developers who use your custom types when they are garbage collected without having been disposed of correctly.

This article show how to build a service layer that authenticates users of Silverlight 2 and ASP.NET AJAX services to prevent illegal access to sensitive back-end services.