C# 非託管資源釋放

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;


namespace ZX.OG.ScreenShot
{
    public class MemoryManagement
    {
        [DllImport("kernel32.dll")]
        public static extern bool SetProcessWorkingSetSize(IntPtr proc, int min, int max);

        public static void FlushMemory()
        {
            try
            {
                GC.Collect();
                GC.WaitForPendingFinalizers();
                if (Environment.OSVersion.Platform == PlatformID.Win32NT)
                {
                    SetProcessWorkingSetSize(System.Diagnostics.Process.GetCurrentProcess().Handle, -1, -1);
                }
            }
            catch (Exception ex)
            {
                
            }
        }
    }
}