Revisiting value types and reference types in C#

In C#, there are two types of data types: value type and reference type. A reference type variable stores a reference to data, and the data is stored in the data heap, while a value type variable stores data directly. With reference types, two variables can refer to the same object. Therefore, operations on one variable may affect objects referenced by another variable. With value types, each variable has its own copy of the data, and operations on one variable cannot affect another variable. Value Type All value types inherit from the ValueType class, which better adapts to value types by overloading the virtual methods of Object. Although ValueType is the implicit base class of value types, you cannot directly create classes that inherit from ValueType. There are two types of value: Structure Type (Structure Type), used to encapsulate data and related functions, including custom Structs and built-in structs (such as integers, floats, booleans, chars, and value tuples) Enum Type, defined by a set of named constants, representing an option or combination of options. The structural type directly inherits from System.ValueType, while the enumeration type inherits from System. Enum. The value type can be empty, use System.Nullable (or T?) generic…