using System;

public class Entity {
	public int EntityID { get; set; }
	public string EntityName { get; set; }
	
	public override int GetHashCode() {
		unchecked {
			int hash = 15485863;
			int multiplier = 1299709;
			
			hash = hash * multiplier + EntityID.GetHashCode();
			hash = hash * multiplier + (EntityName != null ? EntityName.GetHashCode() : 0);
			
			return hash;
		}
	}
}

public class Test
{
	public static void Main()
	{
		var hash1 = new Entity { EntityID = 1337, EntityName = "" }.GetHashCode();
		var hash2 = new Entity { EntityID = 1337, EntityName = null }.GetHashCode();
		
		Console.WriteLine(hash1 == hash2);
	}
}