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[DllImport("User32.dll")]
private static extern bool SetForegroundWindow(IntPtr hWnd);
private const int WS_SHOWNORMAL = 1;
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        public static Process GetPreIns()
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            { //±éÀú£¬ÒÔ»ñȡǰһʵÀýµÄ¾ä±ú                     
                if (proc .Id != cur.Id) //ºöÂÔÏÖÓеÄÀý³Ì
                {
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    unsafe struct A {
        public int x;
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    unsafe struct B {
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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Data.SqlClient; ......
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