C# GUI program

Question

a. Create a GUI program named WriteInventoryRecords that allows you to enter data for items you sell at an online auction site and saves the data to a file. Once you enter data for and item and click "Add" button an item's information shows on the list. If you click "Save" button the data is saved to the file. Create an Inventory class that contains fields for item number, description, and asking price.


 b. Create a GUI program named ReadInventoryRecords that reads the file created in first part and displays each item's data as a list in a window.


 c. Create a GUI program named FindInventoryRecords that reads the file created in part a. The application prompts the user for an item number or price range, and displays data matching records. You must use LINQ