MAKE SURE IT'S IN C# please

Create a console application that prompts the user for a city and then lists the company names for Northwind customers in that city: Enter the name of a city: London There are 6 customers in London: Around the Horn B's Beverages Consolidated Holdings Eastern Connection North/South Seven Seas Imports Enhance the application by displaying a list of all unique cities that customers already reside in as a prompt to the user before they enter their preferred city: Aachen, Albuquerque, Anchorage, .rhus, Barcelona, Barquisimeto, Bergamo, Berlin, Bern, Boise, Br.cke, Brandenburg, Bruxelles, Buenos Aires, Butte, Campinas, Caracas, Charleroi, Cork, Cowes, Cunewalde, Elgin, Eugene, Frankfurt a.M., Gen.ve, Graz, Helsinki, I. de Margarita, Kirkland, Kobenhavn, K.ln, Lander, Leipzig, Lille, Lisboa, London, Lule., Lyon, Madrid, Mannheim, Marseille, Mexico D.F., Montr.al, Munchen, Munster, Nantes, Oulu, Paris, Portland, Reggio Emilia, Reims, Resende, Rio de Janeiro, Salzburg, San Crist.bal, San Francisco, Sao Paulo, Seattle, Sevilla, Stavern, Strasbourg, Stuttgart, Torino, Toulouse, Tsawassen, Vancouver, Versailles, Walla Walla, Warszawa