1     public sealed class CodeActivity1 : CodeActivity
 2     {
 3         // Define an activity input argument of type string
 4         public InArgument<string> Text { get; set; }
 5 
 6         // If your activity returns a value, derive from CodeActivity<TResult>
 7         // and return the value from the Execute method.
 8         protected override void Execute(CodeActivityContext context)
 9         {
10             Console.WriteLine("The time is {0}", DateTime.Now.ToLongTimeString());
11         }
12     }

 1     class Program
 2     {
 3         static void Main(string[] args)
 4         {
 5             Activity workflow1 = new Workflow1();
 6             WorkflowInvoker.Invoke(workflow1);
 7 
 8             // Pause the display
 9             Console.WriteLine("Press enter to continue.");
10             Console.Read();
11         }
12     }