如何在 C# 中获取给定服务的子进程列表? [英] How can I get a list of child processes for a given service in C#?

问题描述

我有一个服务，它创建了许多子进程.使用 c# 我需要确定当前正在运行的这些子进程的数量.

例如，我有一个名为TheService"的服务正在运行.这会产生 5 个子进程，都称为process.exe".是否可以确定在该服务下运行的子进程数?基本上我需要知道process.exe"的实例数，只给出服务/服务进程名称的名称.

解决方案

你需要使用 WMI，Win32_Process 类包含父进程 ID.因此，WQL 查询(请参阅 .NET 下 WMI 的 System.Management 命名空间)如下:

<前>SELECT * FROM Win32_Process where ParentProcessId = n

将 n 替换为服务的进程 ID.

编辑示例代码(基于 Arsen Zahray 的代码):

static ListGetChildProcesses(int parentId) {var query = "Select * From Win32_Process Where ParentProcessId = "+ 父 ID；ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);ManagementObjectCollection processList = searcher.Get();var result = processList.Cast().Select(p =>Process.GetProcessById(Convert.ToInt32(p.GetPropertyValue("ProcessId")));).ToList();返回结果；}

I have a service which creates a number of child processes. Using c# I need to determine the number of these child processes which are currently running.

For example I have a service running called "TheService". This spawns 5 child processes, all called "process.exe". Is it possible to determine the number of child processes running under the service? Essentially I need to know the number of instances of "process.exe" given only the name of the service/service process name.

解决方案

You need to use WMI, the Win32_Process class includes the parent process id. So a WQL query (see System.Management namespace for WMI under .NET) like:

SELECT * FROM Win32_Process Where ParentProcessId = n

replacing n with the service's process id.

EDIT Sample code (based on code by Arsen Zahray):

static List<Process> GetChildProcesses(int parentId) {
  var query = "Select * From Win32_Process Where ParentProcessId = "
          + parentId;
  ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
  ManagementObjectCollection processList = searcher.Get();

  var result = processList.Cast<ManagementObject>().Select(p =>
    Process.GetProcessById(Convert.ToInt32(p.GetPropertyValue("ProcessId")));
  ).ToList();

  return result;
}

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