// 例外のクラス構成を理解しよう
using System;

class Lesson10
{
    public static void Main()
    {
        try
        {
            // throw new Exception();
            // throw new FormatException();
            // throw new IndexOutOfRangeException();
            // throw new DivideByZeroException();
            throw new ArgumentNullException();
        }
        catch (ArgumentException e)
        {
            Console.WriteLine(1);
            Console.WriteLine(e);
        }
        catch (ArithmeticException e)
        {
            Console.WriteLine(2);
            Console.WriteLine(e);
        }
        catch (SystemException e)
        {
            Console.WriteLine(3);
            Console.WriteLine(e);
        }
        catch (Exception e)
        {
            Console.WriteLine(4);
            Console.WriteLine(e);
        }
    }
}

Exception Class (System) | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/api/system.exception?view=netframework-4.8

IndexOutOfRangeException Class (System) | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/api/system.indexoutofrangeexception?view=netframework-4.8

ArgumentNullException Class (System) | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/api/system.argumentnullexception?view=netframework-4.8

DivideByZeroException Class (System) | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/api/system.dividebyzeroexception?view=netframework-4.8

FormatException Class (System) | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/api/system.formatexception?view=netframework-4.8

例外と例外処理 - C# プログラミング ガイド | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/csharp/programming-guide/exceptions/

例外の再スロー　throw - C# リファレンス | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/csharp/language-reference/keywords/throw#re-throwing-an-exception

例外の作成とスロー - C# プログラミング ガイド | Microsoft Docs
https://docs.microsoft.com/ja-jp/dotnet/csharp/programming-guide/exceptions/creating-and-throwing-exceptions