The first of fifteen lessons exclusively available on Programmers Heaven to teach you about the .NET platform and the C# language. This lesson introduces the course, details the architecture of the .NET platform and gives a high level overview of the C# language. More info

Boxing and unboxing is a essential concept in C#’s type system. With Boxing and unboxing one can link between value-types and reference-types by allowing any value of a value-type to be converted to and from type object. Boxing and unboxing enables a unified view of the type system wherein a value of any type can ultimately be treated as an object. More info

This is part two of a two part serires on threading in C#. Again, it's fairly complex so make sure you have a good knowledge of what's going on. It describes some of the more advanced features of threading such as the mutex class and thread local storage as well as some more advanced features. More info

This article attempts to provide a tutorial as well as help with the troubleshooting of your own interop issues. I will describe the issues with using libraries written in C# or VB.NET in your VB6 applications. The reason, this is an issue, is because there is a lot of new code available only in C# or VB.NET that access new functionality of the OS. Or it could simply be the case that there is already existing C# code that's not available as a COM library, that you want to use. More info

Scott Guthrie on new features in Visual Studio 2008 and .NET 3.5. This release delivers new capabilities for web, client, office and mobile development. More info

This article is a good article describing how managed C# compares with unmanaged C++. Using a few different basic applications, you get to see the difference of C++ and C# and compare them both. More info

This article explains POP3 in C# with the TCP/IP methods again. It covers things like receiving lists from the server and of course, connecting and disconnecting. More info

Five part series with source code, on using the OOP features of C# to write a classic style adventure game More info

Eric Lippert offers the following proposition: Suppose we had a hypothetical future version of C# in which interface covariance worked, and we wanted a covariant immutable stack. More info

Get it here first! With Visual Studio 2008, you can develop connected, compelling applications for Windows Vista, the 2007 Office system, mobile devices, and the Web. More info