$(22$ marks$)$ In the Rooms class library project, create both a pure interface IClassroomManager and a

class ClassroomManager that implements the interface. The class $($and therefore the interface$)$ capture

the responsibilities of maintaining$/$recording$/$storing classroom records. The sub$-$points $b$ to $f$ below

define the methods that need to be in the pure interface, and therefore in the class as well to

implement that interface.

a$.$ Consider the following as general guidelines for this class and the interface:

i$.$ The constructor and all methods should pass on any exceptions to the calling code.

ii$.$ It should have a private string data field that defines a hard$-$coded filename $($e$.$g$.$

"classrooms.txt$")$ used to store Classroom objects.

iii. The file format must be as follows:

One classroom record per line.

The properties of each classroom record should be delimited by the vertical

slash, or pipe, character $-$ i$.$e$.$ the "I" character.

iv$.$ It should also have a default $($i$.$e$.$ no argument$)$ constructor that, at the very least,

creates the file if it doesn't already exist.

v$.$ As mentioned, the remaining sub$-$points $($namely $b$ to $f)$ define the public interface for

the pure interface and therefore of the class as well. However, for the class you will also

likely need private helper methods that do the work of:

Parsing a file record $($i$.$e$.$ line of the file$)$ into a Classroom object.

Writing a Classroom object to a file record string with properties delimited by a

$"|".$

Reading$/$Writing Classroom objects from$/$to the file.

b$.$ A method GetNextClassroom$/$d that returns an int that is a new Id that doesn't conflict with

anything already stored on file and can therefore be used for a new Classroom.

c$.$ An AddClassroom method with return type void that takes a Classroom object as an input

parameter that represents a classroom record to be stored and appends it to the end of the file.

d$.$ A GetAllClassrooms method that returns a List

Can you help me$.$ Needs to be done in C#