I couldn't leave this one alone. While I was making the last episode I said that there was possibly another strategy for detecting states and transitions and that was to use Tracking data. In this episode I'll show you a better way to implement our WPF UI using the Model View View-Model (MVVM) pattern that does not require the state machine to have actvitivities to notify the model of state changes. The source including some really cool unit tests that make use of Microsoft.Activities.UnitTesting...

The stats helper monkeys at WordPress.com mulled over how this blog did in 2010, and here’s a high level summary of its overall blog health: The Blog-Health-o-Meter™ reads Wow. Crunchy numbers About 3 million people visit the Taj Mahal every year. This blog was viewed about 27,000 times in 2010. If it were the Taj [...] Blog Post by: zamd

One of the sites I run for the Dutch .NET community is .NET Events in the Netherlands which lists all sorts of community events for, as the name suggests, Dutch .NET developers. The site has been around for a while but always forced people to either go to the site or use in iCalendar feed so see what is happening. Some time ago I decided that these should also be tweeted so people using Twitter would be notified of upcoming events. There are several ways to automatically send tweets to Twitter and...

While working on one of my WP7 applications I noticed a weird problem with the animations. The app is pretty simple with just two pages. I added the same page load animation, see below, to both pages and all seemed to work just fine. < phone:PhoneApplicationPage.Projection > < PlaneProjection x:Name ="plane" CenterOfRotationX ="0" /> </ phone:PhoneApplicationPage.Projection > < phone:PhoneApplicationPage.Triggers > < EventTrigger > < BeginStoryboard...

Just posted a new release of Microsoft.Activities.UnitTesting This release incorporates the Task Parallel Library to greatly simplify test code. Episodes You can now create a task that will run an episode of work in the workflow. An episode is simply a pulse of work that the workflow runs. For example an episode might look like the following Thread Action host Run the workflow host Wait for idle Workflow Activity 1 Workflow Activity 2 (creates a bookmark) Workflow Invoke Idle delegate - host sets...