Once you have written your code workflow in Program.vb module, you can try it running the CodeWorkflowTestExpress project by pressing the F5 key.

Visual Studio provides many tools to write and debug the VB.NET code. For example, you can set a break-point to a specific line (F9) to block the execution at the line. When the execution is blocked by a break-point, you can:

•Go to the next line (F10)

•Go into a Sub() or Function() method (F11)

•Resume the execution of the program (F5)

Check the Microsoft documentation for more info about the Visual Studio features.