Boxing and UnBoxing of C#.Net Interview Questions(5)

Boxing and UnBoxing of C#.Net Interview Questions(5)

1.Define Boxing?

A)It is a process of converting value type to reference type is known as boxing.

For E.G:

int a=100;

object o=(object)a;//Boxing

2.Define UnBoxing?

A) It is a process of converting reference type to value type is known as unboxing.

For E.G:

object o=100;

int i=(int)o;//Unboxing

object o=(object)a;//Boxing

3.How boxing process can be takenplace?

A)Boxing can be takenplace implicitly in the program.

4. How unboxing process can be takenplace?

A)UnBoxing can be takenplace explicitly in the program.

5.What is the process of boxing?

A)Boxing is used to store value types in the garbage-collected heap. Boxing is an implicit conversion of a value type to the type object or to any interface type implemented by this value type. Boxing a value type allocates an object instance on the heap and copies the value into the new object. Due to this boxing and unboxing can have performance impact.