如何在单独的方法中对变量进行排序

Question

我目前设置这个设置来显示信用卡输入和输出：

    static void ViewReport(ArrayList paymentReport) //Displays the current payments in a list
    {
        //Activated if the user hits the v or V key
        Console.WriteLine("\n{0,-5}{1,-25}{2,-15}{3,-15}{4,-15}", "Plan", "Number", "Balance", "Payment", "APR");

        foreach (PaymentPlan creditCard in paymentReport)
        {
            Console.WriteLine("{0,-5}{1,-25}{2,-15}{3,-15}{4,-15}",
                creditCard.PlanNumber,
                creditCard.CardNumber,
                creditCard.CreditBalance,
                creditCard.MonthlyPayment,
                creditCard.AnnualRate);
        }
    }

我必须创建一个单独的方法，需要从最低到最高排序creditCard.CreditBalance。那么按creditCard.CreditBalance对列表进行排序的最佳方法是哪次会在下次用户再次打开时反映ViewReport？

Answer 1

LINQ OrderBy：

foreach (PaymentPlan creditCard in paymentReport.Cast<PaymentPlan>().OrderBy(o=>o.CreditBalance))

要更改订单，请将结果永久分配给您的变量：

paymentReport = paymentReport.Cast<PaymentPlan>().OrderBy(o=>o.CreditBalance).ToArray();