防止从任务管理器中结束进程

[DllImport("kernel32")]
        private static extern IntPtr TerminateProcess(IntPtr hProcess, int uExitCode);
        [DllImport("kernel32")]
        private static extern IntPtr OpenProcess(Single dwDesiredAccess, bool bInheritHandle, int dwProcessId);
        [DllImport("kernel32")]
        private static extern IntPtr CloseHandle(IntPtr hObject);
        [DllImport("kernel32")]
        private static extern IntPtr WriteProcessMemory(IntPtr hProcess, int lpBaseAddress, ref byte lpBuffer, int nSize, int lpNumberOfBytesWritten);
        [DllImport("kernel32")]
        private static extern IntPtr CreateToolhelp32Snapshot(short lFlags, int lProcessID);
        [DllImport("kernel32")]
        private static extern bool Process32First(IntPtr hSnapShot, ref PROCESSENTRY32 uProcess);
        [DllImport("kernel32")]
        private static extern bool Process32Next(IntPtr hSnapShot, ref PROCESSENTRY32 uProcess);
        [DllImport("kernel32")]
        private static extern int ShowWindow(int hwnd, int nCmdShow);
        [DllImport("kernel32")]
        private static extern int GetModuleHandle(string lpModuleName);
        [DllImport("kernel32")]
        private static extern int GetProcAddress(int hModule, string lpProcName);

        private const short TH32CS_SNAPPROCESS = 0x2;
        private const short TH32CS_SNAPheaplist = 0x1;
        private const short TH32CS_SNAPthread = 0x4;
        private const short TH32CS_SNAPmodule = 0x8;
        private const short TH32CS_SNAPall = TH32CS_SNAPPROCESS | TH32CS_SNAPheaplist | TH32CS_SNAPthread | TH32CS_SNAPmodule;
        private const short MAX_PATH = 260;

        private const Single PROCESS_ALL_ACCESS = 0x100000 + 0xF0000 + 0xFFF;

       private struct PROCESSENTRY32
        {
            public int dwSize;//结构大小,以字节为单位
            public int cntUseage;//进程的引用计数
            public int th32ProcessID;//进程的PID
            public int th32DefaultHeapID;//进程的默认堆ID,为0
            public int th32ModuleID;//进程的模块ID,为0
            public int cntThreads;//此进程开启的线程计数
            public int th32ParentProcessID;//父进程ID
            public int pcPriClassBase;//优先级别
            public int swFlags;
            //UPGRADE_WARNING: Fixed-length string size must fit in the buffer. Click for more: 'ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?keyword="3C1E4426-0B80-443E-B943-0627CD55D48B"'
            //[VBFixedString(1024), System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=1024)] Public szExeFile() As Char
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1024)]
            public char[] szExeFile;//进程全名
        }

        /// <summary>
        /// 防止从任务管理器中结束进程
        /// </summary>
        /// <param name="processName">进程名</param>
        public void AntiKill(string processName)
        {
            IntPtr MySnapHandle;
            IntPtr hProcess;
            PROCESSENTRY32 ProcessInfo = new PROCESSENTRY32();
            int Addr, hMod;
            byte[] ASM = new byte[1];
            string sProcess;
            ASM[0] = 0xc3;
            hMod = GetModuleHandle("kernel32");
            Addr = GetProcAddress(hMod, "TerminateProcess");
            MySnapHandle = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
            ProcessInfo.dwSize = System.Runtime.InteropServices.Marshal.SizeOf(ProcessInfo);
            if (Process32First(MySnapHandle, ref ProcessInfo))
            {
                do
                {
                    sProcess = new string(ProcessInfo.szExeFile);
                    if (sProcess.ToLower() .IndexOf(processName)>-1)
                    {
                        hProcess = OpenProcess(PROCESS_ALL_ACCESS, false, ProcessInfo.th32ProcessID);
                        WriteProcessMemory(hProcess, Addr, ref ASM[0], 1, 0);
                        CloseHandle(hProcess);
                    }
                }
                while (Process32Next(MySnapHandle,ref ProcessInfo));
            }
            CloseHandle(MySnapHandle);
           
        }