Boxed and unboxing of C #

2018-08-12 23:03:05

Boxing is the process of converting a value type to a object type or to any interface type implemented by this value type. When the CLR is boxing a value type, it wraps the value inside the System.Object and stores the latter on the managed heap. Unboxing extracts the value type from the object. boxing is implicit; unboxing is explicit. The concept of boxing and unboxing is the basis for a unified view of the type System C #, where any type of value is treated as an object.

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Understanding: Boxing (boxing) assigns a value type to a reference type. From the stack (stack) to the heap (heap).

Unpacking (unboxing) returns the reference type to the value type variable. From heap to stack. Although not necessarily successful.

Example: Boxing

1 int 123 ; 2 // The following line boxes I. 3 object o = i;

Example: Unboxing

1 123 ; 2 i = (int) o;  // Unboxing

Boxed and unboxing of C #