I’m following these trainings-sessions and every time they create these conditons, but not explaining how to get those conditon steps… Where and what can I learn to create and understand these? Are they typical .NET of C# or visual basic?
The rest is understandable but these conditions come out of the blue…
The mail object has a property From as seen in the table and in your first example. Each object/property/method has a dedicated page you can use for reference as long as you can search for them.
When you start thinking in terms of .NET or C# objects/property/method, it’s easier to recognize them when you see them.
You can also use the Intellisense feature by typing a dot “.” at the end of the object name like mail and it will show you a dropdown of all available properties and methods of that object. Wrench icons are properties and purple cubes are methods: