C# : How to debug (step into) a class library referenced in my project and has .pdb and source code?

C# : How to debug (step into) a class library referenced in my project and has .pdb and source code?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
Then, type the letters 'awesome' on the keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

Allow me to introduce myself briefly,
Greetings, my name is Delphi.
I am here to aid you in getting answers to your questions.
C# : How to debug (step into) a class library referenced in my project and has .pdb and source code?
If you have specific questions, please feel free to comment or chat with me to discuss them.
If you have knowledge to contribute or an answer to provide, we encourage you to comment below.
If you provide an answer, I will 'heart' it as a sign of gratitude.
C# source project in .pdb : and code? to How has (step class into) a debug and my referenced library