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Describe Boxing and Unboxing.Boxing
- It allows you to treat a value type the same as a reference type.
- It is used to store value types in the garbage-collected heap.
- It is an implicit conversion of a value type to the type object or to any interface type implemented by this value type.
- A value type allocates an object instance on the heap and copies the value into the new object.
Unboxing
- It converts a boxed reference type back to a value type.
- It is an explicit conversion from the type object to a value type or from an interface type to a value type that implements the interface.
An unboxing operation consists of:
1. Checking the object instance to make sure that it is a boxed value of the given value type.
2. Copying the value from the instance into the value-type variable.
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