Browse by Tags

I’ve been publicizing for a while that Visual Studio 11 (still in Beta) supports C# expressions in workflow designer. Of course you might also possibly want to use C# or VB expressions by writing a workflow in code, instead of by building it in Visual Studio. There are actually a couple tricks to doing...

If you’re exclusively using the Visual Studio workflow designer to design activities, you might go for a very long time (or forever) without discovering a particular System.Activities namespace, which is System.Activities.Expressions . The first reason you might never discover them is that none of the...

These questions (paraphrased) have come up a bunch of times so it’s not that hard to find the answer, but I just rediscovered them so it’s on topic for today. “I want to add a namespace to the Imports designer automatically at design time, so the user doesn’t have to do it manually. How can I do that...

Previously, I demonstrated how to use an ExpressionTextBox in a custom property editor . In this followup post, I will show how to dynamically bind the ExpressionType of the ExpressionTextBox to the type of the argument of the custom activity. We don’t provide a type converter for this out of the box...

I have fielded a couple of questions from customers and also a forum post asking how to get the binding correct for the ExpressionTextBox correct in the property grid (well Eric fielded that one with some help on our side, thanks Eric!). For the record here are the details and an explanation. WPF provides...

Oh, the imports designer . This innocuous looking piece of UI packs a lot of functionality in a little designer. You would think that this designer should be pretty straightforward. The original concept of this feature was that this would simply be the place to manage namespaces, much in the same way...

The hosted compiler does something called type coercion. It converts one type to another type using the widening and narrowing conversions specified by the big VB compiler. On the whole, this is very useful functionality. It allows you to strongly type your arguments but still set your Int16 variable...