list的ForEach跟FindAll

using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using System.Data;

namespace TestList
{
    class Program
    {
        static void Main(string[] args)
        {            
            List<DateTime> list = new List<DateTime>();
            List<string> list2 = new List<string>();
            for(int i=1 ;i<=30;i++)            
            {
                DateTime TestTime = new DateTime(2009,11,i);
                list.Add(TestTime);
            }
            Action<DateTime> trace = delegate(DateTime DValue)
                                 {
                                     
                                     DValue = DValue.AddMonths(1);//加一個月                                     
                                     //寫入Trace
                                     Trace.WriteLine(DValue);
                                     //將資料寫入屬性
                                     Trace.Listeners[0].Attributes.Add(DValue.ToString("yyyyMMdd"), DValue.ToString("yyyyMMdd"));
                                     //Console.WriteLine(DValue.ToString("yyyyMMdd"));                                     
                                 };
            Predicate<DateTime> isPrime = delegate(DateTime DValue)
                                       {
                                           //當日期為偶數為真反之為否
                                           return (DValue.Day % 2 == 0) ? true : false;
                                       };            
            list.ForEach(trace);             
            List<DateTime> primes = list.FindAll(isPrime);
            foreach (DateTime temp in list)
                Console.WriteLine( Trace.Listeners[0].Attributes[temp.AddMonths(1).ToString("yyyyMMdd")].ToString());
            foreach (DateTime temp in primes)
                Console.WriteLine(temp.ToString("yyyyMMdd"));
            Console.ReadLine();
        }
    }
}