using System;

public class Program

{

    public static void Main()

    {

        Entry1();

        Entry2();

    }

    //將此方法當成不同的類別來看

    public static void Entry1()

    {

        Status.IsValid = Checker.IsPasswordCorrect();

        if (Status.IsValid == false)

        {

            //做某些事

            Console.WriteLine("Password Failed");

            return;

        }

        Status.IsValid = Checker.IsEmailCorrect();

        if (Status.IsValid == false)

        {

            //做某些事

            Console.WriteLine("Email Failed");

            return;

        }

        //下略50個判斷式...

    }

    //將此方法當成不同的類別來看

    public static void Entry2()

    {

        if (Status.IsValid)

        {

            Console.WriteLine("Success");

        }

    }

}

​

public class Status

{

    public static bool IsValid { get; set; }

}

​

public class Checker

{

    public static bool IsPasswordCorrect()

    {

        //針對密碼做某些事

        return true;

    }

    public static bool IsEmailCorrect()

    {

        //針對Email做某些事

        return false;

    }

}