垃圾回收

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text; 
namespace ConsoleApplication1
{
    class Program
    {
        [DllImport("psapi.dll")]
        static extern int EmptyWorkingSet(IntPtr hwProc);

        static void Main(string[] args)
        {
            ClearMemory();
        }
        public static void ClearMemory()
        {
            GC.Collect();
            GC.WaitForPendingFinalizers();
            Process[] processes = Process.GetProcesses();
            foreach (Process process in processes)
            {
                //以下系统进程没有权限，所以跳过，防止出错影响效率。  
                if ((process.ProcessName == "System") && (process.ProcessName == "Idle"))
                    continue;
                try
                {
                    EmptyWorkingSet(process.Handle);
                }
                catch
                {
                }
            }
        }  
           
    }   
    class Test
    {
        public int k = 1;
    }
}