Fix “Object Reference Not Set to an Instance of an Object” in Microsoft Visual Studio

How do I fix this "Object reference not set to an instance of an object" error?

how to fix object reference not set to an instance of an object

Samuel Doe: The First World Leader to be Tortured On Camera! #president #liberia #africa

Dr. Doe's Chemistry Quiz 😳🔥💯

Dr Doe's Chemistry Quiz iOS & Android - How to Get and Play!

Object Reference | C# Complete Course

Using Parameter Input for Object References in C# Adventures

C# Value Type and Reference Type Explained: A Beginner’s Guide 🚀