using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Drawing;

using System.IO;

using System.Runtime.InteropServices;

using System.Windows.Forms;

[DllImport("kernel32.dll")]

private static extern bool SetProcessWorkingSetSize(IntPtr process, int minSize, int maxSize);

//关闭窗体按钮

private void btnReturn_Click(object sender, EventArgs e)

{

　　this.Close();

　　FlushMemory();

}

//刷新存储器

private static void FlushMemory()

{

　　GC.Collect();

　　GC.WaitForPendingFinalizers();

　　if (Environment.OSVersion.Platform == PlatformID.Win32NT)

　　{

　　　　SetProcessWorkingSetSize(Process.GetCurrentProcess().Handle, -, -);

　　}　

}