This article discuss custom iterators, predicates, and generic methods. You can combine these three techniques to create small building blocks that plug together in a variety of ways to solve everyday development problems. Once you can recognize when to apply this pattern, you will be able to create a large number of reusable building blocks.

A design pattern can solve many problems by providing a framework for building an application. Design patterns, which make the design process cleaner and more efficient, are especially well-suited for use in C# development because it is an object-oriented language. Existing design patterns make good templates for your objects, allowing you to build software faster. This article describes several popular design patterns you can use in your own applications, including the singleton, the decorator, the composite, and the state classes, which can improve the extensibility of your applications and the reuse of your objects.

The best way to understand how interfaces improve software design is to see a familiar problem solved using interfaces. First, take a tightly-coupled system design without interfaces, spot its deficiencies and then walk-through a solution of the problem with a design using interfaces.

MongoDB is one of the principal tools of the NoSQL movement, which offers alternatives to the traditional relational database system. Learn its strengths and weaknesses as Ted Neward examines the document-based database in detail in the first of a series of columns

Generics are often introduced as the mainstream language feature of Whidbey (.NET2). However, while surfing off the beaten path I realized that new features named anonymous methods and iterators are also very interesting. Unlike generics, these two features don't imply new IL instructions set changes compared to .NET1 IL instructions set or any CTS changes. All the magic is in the compilers.

As with anonymous methods, iterators are a non-obvious but powerful feature introduced in the version 2 of C#. Iterators can be qualified as syntactic sugar since they don’t imply any CLR/IL instruction set changes compared to .NET 1.x. Just like anonymous methods, all the magic is in the compiler. To understand the underlying motivations of C#2 iterators, we’ll first dig into C#1 iterators. Then, we’ll cover the basics of this feature in version 2, following with an analysis of the compiler’s work. Finally, we’ll drill into advanced uses of C#2 iterators.

A quick reference guide to highlight some key syntactical differences between Java and C#.

A article comparing the main differences between the two languages.

Learn how to develop open source C# applications using the Emonic Eclipse plug-in and how to use Eclipse on existing Microsoft® .NET Framework V2.0 projects.

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.