這是個我在C#調用批處理文件時遇到的問題。首先我通過Process.Start方法調用一個批處理文件，那個批處理文件里面則調用了一大堆程序。當退出C#程序時，我在程序中結束殺掉了那個批處理文件的Process，但是，那個批處理所調用的子進程卻無法像直接調用批處理文件那樣隨著批處理文件的進程一起被殺掉，而是自動向上提升成為了獨立的進程。

在網上查了一下，可以通過NtQueryInformationProcess函數查詢子進程的信息，并同時也查到了一段殺掉進程及所有子進程的C#代碼，有需要的朋友可以參考一下。

代碼 static?class?ProcessExtend
????{
????????//?[StructLayout(LayoutKind.Sequential)]
????????private?struct?ProcessBasicInformation
????????{
????????????public?int?ExitStatus;
????????????public?int?PebBaseAddress;
????????????public?int?AffinityMask;
????????????public?int?BasePriority;
????????????public?uint?UniqueProcessId;
????????????public?uint?InheritedFromUniqueProcessId;
????????}

????????[DllImport("ntdll.dll")]
????????static?extern?int?NtQueryInformationProcess(
???????????IntPtr?hProcess,
???????????int?processInformationClass?/*?0?*/,
???????????ref?ProcessBasicInformation?processBasicInformation,
???????????uint?processInformationLength,
???????????out?uint?returnLength
????????);

????????public?static?void?KillProcessTree(this?Process?parent)
????????{
????????????var?processes?=?Process.GetProcesses();
????????????foreach?(var?p?in?processes)
????????????{
????????????????var?pbi?=?new?ProcessBasicInformation();
????????????????try
????????????????{
????????????????????uint?bytesWritten;
????????????????????if?(NtQueryInformationProcess(p.Handle,?0,?ref?pbi,?(uint)Marshal.SizeOf(pbi),?out?bytesWritten)?==?0)?//?==?0?is?OK
????????????????????????if?(pbi.InheritedFromUniqueProcessId?==?parent.Id)
????????????????????????????using?(var?newParent?=?Process.GetProcessById((int)pbi.UniqueProcessId))
????????????????????????????????newParent.KillProcessTree();
????????????????}
????????????????catch?{?}
????????????}
????????????parent.Kill();
????????}
????}

?

PS：今天發現NtQueryInformationProcess函數在x64位程序上運行無效，?具體原因不明，Google了一下也沒有找到答案，反而找到了另一種解決方案，通過WMI來實現的。在x86和x64下都可以使用。

View Code static?void?KillProcessAndChildren(int?pid)
{
????ManagementObjectSearcher?searcher?=?new?ManagementObjectSearcher("Select?*?From?Win32_Process?Where?ParentProcessID="?+?pid);
????ManagementObjectCollection?moc?=?searcher.Get();
????foreach?(ManagementObject?mo?in?moc)
????{
????????KillProcessAndChildren(Convert.ToInt32(mo["ProcessID"]));
????}
????try
????{
????????Process?proc?=?Process.GetProcessById(pid);
????????Console.WriteLine(pid);
????????proc.Kill();
????}
????catch?(ArgumentException)
????{?
????????/*?process?already?exited?*/
????}
}

?

轉載于:https://www.cnblogs.com/TianFang/archive/2010/05/19/1739614.html

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