Workflow TV - Lab Introduction to WF4: Exercise 1 - Hello Workflow
- Posted: Jul 21, 2010 at 3:44 PM
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Workflows execute a business process. Each step in that process is implemented by an
Activity. In this exercise, you will create and test a simple "Hello World" process using Windows Workflow Foundation 4.
Intro To WF4 Hands On Lab (Visual Studio Gallery)
Intro To WF4 Hands On Lab (MSDN Code Gallery)
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Cool video.
Why a VB expression and not a C# expression since its a C# project ? What's the benefit of doing that ?
The reason is that the VB compiler is the only compiler that provided the support required for in-memory compilation of expressions. In the future we hope to offer the option of using other languages for expressions as well.
Interesting. It would be cool to see DLR languages enabled in this context
Anders Hejlsberg has talked about Compiler as a Service, meaning in the future we might see the C# compiler be opened up for programmatic use. At least we know that the compiler is being rewritten in C#, so at some point we're likely to see this happen.
When I do Hello Workflow, this project rebuilds every time I hit the Rkey on my keyboard. So I ended up with "Hello Wokflow 4". VS 2010 doesn't seem to do rebuild on other projects though, just this one.
Wow - that is very interesting... I've not heard this from anyone else. Not sure what to say about that.
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