What is Boxing and Unboxing in C#?

1.	What is Boxing and Unboxing in C#?
Answer» The two functions are used for typecasting the DATA types: Boxing: Boxing CONVERTS value TYPE (int, char, etc.) to reference type (object) which is an implicit CONVERSION process using object value. Example: int num = 23; // 23 will assigned to numObject Obj = num; // Boxing UNBOXING: Unboxing converts reference type (object) to value type (int, char, etc.) using an explicit conversion process. Example: int num = 23; // value type is int and assigned value 23Object Obj = num; // Boxingint i = (int)Obj; // Unboxing

Answer»

The two functions are used for typecasting the DATA types:

Boxing: Boxing CONVERTS value TYPE (int, char, etc.) to reference type (object) which is an implicit CONVERSION process using object value.

Example:

int num = 23; // 23 will assigned to numObject Obj = num; // Boxing

UNBOXING: Unboxing converts reference type (object) to value type (int, char, etc.) using an explicit conversion process.

Example:

int num = 23; // value type is int and assigned value 23Object Obj = num; // Boxingint i = (int)Obj; // Unboxing

Discussion