using System;

public class Program {

​

    static void main(){

        var leaveApplicationAssistant = new LeaveApplicationAssistant();

        leaveApplicationAssistant.OnApply += OnApply;

    }

    private static void OnApply(object sender, LeaveApplicationEventArgs e){

        Console.WriteLine(e.user);

        Console.WriteLine(e.From);

        Console.WriteLine(e.To);

    }

}