using Microsoft.Extensions.Configuration; var configuration = new ConfigurationBuilder() .AddJsonFile("appsettings.json") .Build(); var settings = new VariableDictionary(); configuration.Bind(settings);
var phonebook = new VariableDictionary(); phonebook["John"] = "123-456-7890"; phonebook["Jane"] = "555-555-1212"; phonebook.Remove("Jane"); foreach (var contact in phonebook) { Console.WriteLine($"{contact.Key}: {contact.Value}"); }In this example, we create a new VariableDictionary and add two contacts. We then remove one of the contacts and loop through the remaining contacts and print them to the console. Overall, the VariableDictionary is a useful data structure in C# for storing key-value pairs. It is a part of the Microsoft.Extensions.Configuration.Abstractions package library.