Write a C# programs to: $$

Declare a class Swap with the following members: $(30$ points$)$

two private member variables of integer type;

one member function to swap the integers between the two member variables $($the arguments should be by $$reference$)$

a main function to:

read two integers from the keyboard and assigned them to the object of class Swap$(30$ points$)$

call the object$$s member function to swap the two integers. $(20$ points$)$

display the values of the object$$s member variables on the screen. $(20$ points$)$