.NET is now a core part of several Microsoft platforms, and each has focused on specific subset of APIs. A lot of thought has been put into crafting each API surface area. Many of you have asked how the .NET APIs available for Metro style apps were chosen...

Developers often ask for guidance on how to write responsive user interfaces. Reading most books about the .NET Framework over the past ten years, you’ll see coverage of the asynchronous programming model which requires a lot of careful attention while...

Application performance is something we hear about all the time. It almost always falls into one of the top three issues when we aggregate all of the feedback channels from .NET developers. While performance has many characteristics, application startup...

Rapid development has been one of the enduring themes behind the design of the .NET Framework. We know that authoring application installers is particularly difficult and could be improved. The following post is by Richard Lander from the program management...

We continue to bring certain features through updates to .NET 4 without having to wait for the .NET 4.5 release. This post covers what the latest platform update has to offer. Vivek Mishra from the .NET Servicing team authored the following. – Layla...

In September, we released the .NET Framework 4.5 Developer Preview . The Developer Preview was essentially a “feature complete” release, enabling you to “kick the tires” and otherwise get a good sense of what we were in the process...

With .NET 4, we’ve focused on bringing certain features to market through updates without having to wait for the .NET 4.5 release. This post covers what the latest platform update has to offer. Vivek Mishra from the .NET Servicing team authored the following...

Garbage collection is one of premiere features of the .NET managed coding platform. As the platform has become more capable, we’re seeing developers allocate more and more large objects. Since large objects are managed differently than small objects...

Fundamentals were a big part of our focus while building .NET 4.5. We divided fundamentals into seven areas called “tenets”. One of these tenets is compatibility. Today’s post is by Manish Agnihotri, a program manager who is driving...

Last week at the BUILD conference, we had the pleasure of announcing the next version of the .NET Framework and releasing a developer preview at the same time. We have so many new things in .NET 4.5 to discuss with our developer community – we’re...

We wanted to let you know that we’ll be changing the signature verification process for ClickOnce applications and WPF XAML Browser Applications (XBAPs) in an upcoming update.  This change will help users recognize when they’re running untrusted...

The Base Class Libraries team, the wider CLR team and Microsoft Research worked hard on this new technology and we are very proud to be able to share the news. Read the full article for details.

After installing .NET 4.0 or later you may notice something a little unusual about your .NET processes. Here is a partial list of the loaded modules of a simple “Hello World” executable compiled with the .NET 2.0 compiler. start end module name 60f00000...

  This post is meant to help you understand what runtime in-process side-by-side is, how to think about it, how to use it, and how it affects application and component migration to the .NET 4 Runtime. This post is relevant to you if you use native...

The CLR Code Generation team blog has a series of new posts featuring hands-on style content around how to use the NGen technology and how to measure performance benefits from it. You can find the series here .

As hopefully most of you know, Microsoft has a site called Connect where customers can log bugs and suggestions ( http://connect.microsoft.com/ ). Issues for .NET can be found in the Visual Studio and .NET Framework feedback category ( http://connect...

This Codeplex site will feature demos, samples, and helper libraries related to the selection and activation of the CLR: http://clractivation.codeplex.com/ With .Net Framework 4 and VS 2010 the new ability to load multiple versions of the runtime has...

At the recent PDC, Scott Guthrie announced in his Silverlight 4 keynote that we had implemented a new feature, to enable developers to share certain assemblies between Silverlight and .NET. There are many differences between Silverlight and full .NET...

One of our team’s field engineers recently sent a link to a Channel 9 video: Steve Michelotti of e.magination on High Performance Web Solutions . This company built a 64-bit web server that handles over 3 billion transactions a day and guarantees a 250...

I recently received the following question from a customer: “During our test runs (which might run for hours), if a process crashes, we’d like to create full memory dumps for later diagnosis. Can I configure the machine to do this automatically...

My name is Immo Landwerth and I was a Program Manager intern this year in the CLR team. In this blog post I am not going to showcase any of the fantastic features that will ship with .NET 4.0 – my colleagues in the CLR team know them much better and already...

The IL Stub Diagnostic Tool enables real-time inspection of the contents of IL stubs. Developers now have a powerful tool to troubleshoot issues in interop marshalling, Introduction Jesse posted a great blog talking about the concept, history, and improvements...

Every so often we get asked questions about the CLR’s support for exception filters. Why do some languages support them and others do not? Is it a good idea to add them to my new language? When should I use a filter vs. catch/rethrow? Etc. I’ll try to...

  When the CLR needs to transition between managed and native code – usually because of P\Invoke or COM interop – we need to generate marshaling stubs (little chunks of code) to handle that specific call and transform the data from managed to native...

In the introductory post on CLR Binder (‘ Understanding the Binder – Part 1 ’), we listed the set of steps that the CLR Binder follows, in order to locate an assembly and bind to it. On reading this, an obvious question comes to mind. What happens when...