Workflow TV - Lab Introduction to WF4: Exercise 3 - The Code Activity

In this exercise you will enhance your program and the SayHello activity to meet some new requirements.
Intro To WF4 Hands On Lab (Visual Studio Gallery)
Intro To WF4 Hands On Lab (MSDN Code Gallery)
Lab Exercises
How do we go about testing Bookmarks?
To test bookmarks you have to use WorkflowApplication and then when the activity goes idle your OnIdle delegate will be invoked. When this happens you can resume the bookmark. I have some sample code I'll publish soon so you can see how this is done.
Hi Sir ,
This is error that i am getting wen i'am doing unit test project ie video 5 in this series
Error CS0012 The type 'ISupportInitialize' is defined in an assembly that is not referenced. You must add a reference to assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
please help me to get this solved.