Workflow TV - Lab Introduction to WF4: Exercise 4 - Dynamic Workflows with XAML

Posted: Jul 22, 2010 at 12:52 PM

By: Ron Jacobs

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2 Comments

5 minutes, 51 seconds

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In this exercise you will see how you can load a XAML file and create a dynamic activity from the XAML definition. This allows you to load XAML at runtime and invoke it like you would do a script.

Intro To WF4 Hands On Lab (Visual Studio Gallery)
Intro To WF4 Hands On Lab (MSDN Code Gallery)

Lab Exercises

Exercise 1 - Hello Workflow (video)
Exercise 2 - Refactoring Workflow (video)
Exercise 3 - The CodeActivity (video)
Exercise 4 - Dynamic Workflows with XAML (video)
Exercise 5 – Testing Activities (video)
Exercise 6 – WorkflowApplication (video)
Exercise 7 – If/Else Logic (video)

static void Main(string[] args)
        {
            WorkflowInvoker.Invoke(ActivityXamlServices.Load("SayHello.xaml"));
            Console.ReadKey(false);
        }

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malawto Go Horse!

Jul 30, 2010 at 9:45 PM quote reply

And at the end, after you've set your SayHello.xaml file properties -- you'll also want to change back Main in Program.cs:

  static void Main(string[] args)
        {
            WorkflowInvoker.Invoke(new SayHelloInCode());
        }

From where it had been set in Task 4.2 to:

static void Main(string[] args)

{

WorkflowInvoker.Invoke(ActivityXamlServices.Load("SayHello.xaml"));

Console.ReadKey(false);

}

I'm loving this series of videos and exercises... thanks!

rojacobs Ron Jacobs

Jul 31, 2010 at 4:46 PM quote reply

Actually you don't have to do this. In Exercise 5 Task 6 we modify Main() to do something different.

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