This is object oriented programing C# (C sharp)

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C#

Create a windows application project 'CurrentBudget' in a solution 'Budgeting'.
Add a class library project 'BudgetLib' to the same solution 'Budgeting"

In the BudgetLib project

1. Define an interface IExpense with the following get properties: Amount, DateExpenseMade, and Description.
2. Define a class Expense that, inherits from IExpense, with private fields: _amount, _dateExpenseMade, and short description. Add constructors and necessary properties, and method.
3. Define an abstract class Budget with private fields: _balance, _budgetCode, _dateItExpires, and a list of expenses (such as: List<iexpense> _expenses).
4. Add constructor (it should not include a parameter for _expenses), properties and methods: virtual AddExpense method, which should take a single parameter: amount. This method should add an expense to the _expenses list and decrease the budget balance, making sure there are enough funds in the budget.
Add an abstract method GeBudgetData().
Within child class, This method is to return a string containing all the data pertaining to the child class.

5. Define a class BusinessBudget that inherits (polymorphic inheritance) from Budget. the BusinessBudget class should define an extra private field: _department

6. Define a class HomeBudget that inherits (polymorphic inheritance)from Budget, this class should define an extra field _category (such as: Food, Clothing, Cleaning, Entertainment, etc…)

In Form1:
7. Define a List of budgets

8. Define a Dictionary of budgets, using the budgetCode as the key
9. In Form1_Load create at least 3 BussinessBudget objects and at least 3 HomeBudget objects. Add all to the budget dictionary and to the list of budget
10. Sort the list by balance
11. In Form1[Design], add a button and a display control (richtextbox)
12. Attach code to the button to display all the budgets in the budget list.
13. Add gui to request budgetcode from user, then use the dictionary to get the budget object with the given code and display it.
14. Request an integer from user (0 to 255) best to use the byte type. Display its binary equivalent value.
15. Write a statement to set the fourth bit (bit3) to 1, display it

16. Write a statement to set the sixth bit (bit5) to 0, display it

17. Write an if statement to check if bit4 is set to 1




What I have tried:

yes I did but to verify my coding.