1 public static class Remap
   2     {
   3         private static double Map(double value, double fromSource, double toSource, double fromTarget, double toTarget)
   4         {
   5             return (value - fromSource) / (toSource - fromSource) * (toTarget - fromTarget) + fromTarget;
   6         }
   7     }

   1 public class CustomEventArgs : EventArgs
   2 {
   3     private readonly object item;
   4 
   5     public object Item
   6     {
   7         get { return item; }
   8     }
   9 
  10     public CustomEventArgs(object item)
  11     {
  12         this.item = item;
  13     }
  14 }

   1 public delegate void NotifyCustomEvent(object sender, CustomEventArgs e);
   2 public event NotifyCustomEvent CustomEvent;
   3 
   4 private void RaiseCustomEvent(obj sender,  obj item)
   5 {
   6     CustomEvent?.Invoke(sender, new CustomEventArgs(item));
   7 }

   1 public InsanceOwner()
   2 {
   3   Instance instance = new instance();
   4   instance.CustomEvent += new Instance.NotifyCustomEvent(CustomEventHandler);
   5 }
   6 
   7 public void CustomEventHandler(obj sender, CustomEventArgs e)
   8 {
   9     //Handle that custom shit
  10 }

   1 public class Mission : IComparable<Mission>, IComparable
   2 {
   3   public string Name { get; private set; }
   4   public DateTime LaunchDate { get; private set; }
   5   public DateTime ReturnDate { get; private set; }
   6   public string SpaceShip { get; private set; }
   7 
   8   public List<Astronaut> Astronauts { get; private set; }
   9 
  10   public Mission(string name, DateTime launchDate, DateTime returnDate, string spaceShip)
  11   {
  12       Astronauts = new List<Astronaut>();
  13       Name = name;
  14       LaunchDate = launchDate;
  15       ReturnDate = returnDate;
  16       SpaceShip = spaceShip;
  17   }
  18 
  19   public int CompareTo(Mission other)
  20   {
  21       if (ReferenceEquals(this, other)) return 0;
  22       if (ReferenceEquals(null, other)) return 1;
  23       int nameComparison = string.Compare(Name, other.Name, StringComparison.Ordinal);
  24       if (nameComparison != 0) return nameComparison;
  25       int launchDateComparison = LaunchDate.CompareTo(other.LaunchDate);
  26       if (launchDateComparison != 0) return launchDateComparison;
  27       int returnDateComparison = ReturnDate.CompareTo(other.ReturnDate);
  28       if (returnDateComparison != 0) return returnDateComparison;
  29       return string.Compare(SpaceShip, other.SpaceShip, StringComparison.Ordinal);
  30   }
  31 
  32   public int CompareTo(object obj)
  33   {
  34       if (ReferenceEquals(null, obj)) return 1;
  35       if (ReferenceEquals(this, obj)) return 0;
  36       if (!(obj is Mission)) throw new ArgumentException($"Object must be of type {nameof(Mission)}");
  37       return CompareTo((Mission) obj);
  38   }
  39 }