I recently stumbled across something with ASP.NET MVC action filters where they weren’t being executed in quite the order I was expecting. More specifically, I had made a poor assumption that filters defined at the Controller level would all execute prior to any action-level filters. After all, that was the behavior I thought I had seen before, but it turned out that it worked a bit differently. In this post I will explore exactly…

The introduction of the dynamic keyword in C# 4.0 allows you to do a lot of things you couldn’t do otherwise, but it also makes it easy to forget that C# is still not a dynamic language, so there are limitations. Recently I found myself wanting to whip up a quick test page for something, with a very simple controller action and view. It wasn’t meant to be permanent, so creating a dedicated…

I recently discovered that despite the fact that I’d been using the TempData dictionary in my applications, I didn’t really have a full grasp on what it was doing behind the scenes. Of course this meant learning the lesson the hard way once something stopped working like I thought it would. I only really had myself to blame since in the end it was a simple case of RTFM, but it seemed like a…

One of the new features introduced in C# 4.0 is the dynamic keyword. So far I haven’t had much use for it, but lately I’ve discovered that it can be very useful when designing ASP.NET MVC views. It also has uses when interacting with COM APIs and other dynamic languages, but I’m going to focus on its use in MVC. If you’re using .NET 4.0 and ASP.NET MVC…

One of the really cool new features in ASP .NET MVC 2 is templated helpers. The basic idea is that you can define a template for either displaying or editing a particular data type, and it will be used by default when displaying or editing that type. This allows you to define the behavior once, and then you don’t need to worry about it in every view you write thereafter. In this post I’ll…