如何以托管方式在.NET中获取父进程

How to get parent process in .NET in managed way(如何以托管方式在.NET中获取父进程)

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问题描述

I was looking a lot for method to get parent process in .NET, but found only P/Invoke way.

解决方案

This code provides a nice interface for finding the Parent process object and takes into account the possibility of multiple processes with the same name:

Usage:

Console.WriteLine("ParentPid: " + Process.GetProcessById(6972).Parent().Id);

Code:

public static class ProcessExtensions {
    private static string FindIndexedProcessName(int pid) {
        var processName = Process.GetProcessById(pid).ProcessName;
        var processesByName = Process.GetProcessesByName(processName);
        string processIndexdName = null;

        for (var index = 0; index < processesByName.Length; index++) {
            processIndexdName = index == 0 ? processName : processName + "#" + index;
            var processId = new PerformanceCounter("Process", "ID Process", processIndexdName);
            if ((int) processId.NextValue() == pid) {
                return processIndexdName;
            }
        }

        return processIndexdName;
    }

    private static Process FindPidFromIndexedProcessName(string indexedProcessName) {
        var parentId = new PerformanceCounter("Process", "Creating Process ID", indexedProcessName);
        return Process.GetProcessById((int) parentId.NextValue());
    }

    public static Process Parent(this Process process) {
        return FindPidFromIndexedProcessName(FindIndexedProcessName(process.Id));
    }
}

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