[C#/Linq][Join C#] join … in … on … equals … 사용 예제.

public class Example { public static void Main() { Console.Write("> \n"); List codes = new List { new Code { Name = "CodeA", CategoryId = 0 }, new Code { Name = "CodeB", CategoryId = 0 }, new Code { Name = "CodeC", CategoryId = 1 }, new Code { Name = "CodeD", CategoryId = 1 }, new Code { Name = "CodeE", CategoryId = 2 }, }; List keyCategories = new List { new KeyCategory { Id = 0, CategoryName =.....