C#中如何获取父进程的名字

Question

我现在在做一个项目，一个可执行文件是一个windows服务，但也要求它能在命令行执行不同的任务。所以需要在程序启动时判断这个程序是由Service Manager启动的还是由Console启动的，由于Service Manager的进程名字是固定的，那很显然最简单的方法就是看启动该程序的父进程的名字是不是Service Manager。但我查了一下Process类，没发现类似的功能。那在C#中有没有方法获取到父进程的名字呢？谢谢！

Answer 1

使用命令行参数来识别就可以了。在Service Manager启动该程序时提供一个参数。程序启动时检查一下就可以了。如下，在Service Manager启动时使用注释中的方式即可。        static void Main(string[] args)
        {
            bool startBySM = args.Length > 0 && args[0] == "SM";            /* ...
             Process.Start("...", "SM");
             */
        }

Answer 2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;namespace ConsoleApplication1
{
    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));
        } 
    }
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Process.GetCurrentProcess().Parent().ProcessName); 
        }
    }
}

Answer 3

这个方法确实有用，但怎么创建Perf counter的时候这么慢

Answer 4

        public static class ProcessExtensions
        {
            private static string FindIndexedProcessName(int pid)
            {
                string processName = Process.GetProcessById(pid).ProcessName;
                Process[] processesByName = Process.GetProcessesByName(processName);
                string processIndexdName = null;
                for (var index = 0; index < processesByName.Length; index++)
                {
                    processIndexdName = index == 0 ? processName : processName + "#" + index;
                    PerformanceCounter processId = new PerformanceCounter("Process", "ID Process", processIndexdName);
                    if ((int)processId.NextValue() == pid)
                    {
                        return processIndexdName;
                    }
                }
                return processIndexdName;
            }
            private static Process FindPidFromIndexedProcessName(string indexedProcessName)
            {
                PerformanceCounter parentId = new PerformanceCounter("Process", "Creating Process ID", indexedProcessName);
                return Process.GetProcessById((int)parentId.NextValue());
            }
            public static Process Parent(Process process)
            {
                return FindPidFromIndexedProcessName(FindIndexedProcessName(process.Id));
            }
        }调用 
   #region 向进程发送消息
        const int WM_COPYDATA = 0x500;
        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        private static extern int SendMessage(
            int hWnd, // handle to destination window    
            int Msg, // message           
            int wParam, // first message parameter        
            ref COPYDATASTRUCT lParam // second message parameter   
            );        [DllImport("User32.dll", EntryPoint = "SendMessage")]
        private static extern int SendMessage(
            int hWnd, // handle to destination window    
            int Msg, // message           
            int wParam,　// first message parameter 
            int lParam // second message parameter 
        );
        [DllImport("User32.dll", EntryPoint = "FindWindow")]
        private static extern int FindWindow(string lpClassName, string lpWindowName);
        public struct COPYDATASTRUCT
        {
            public IntPtr dwData;
            public int cbData;
            [MarshalAs(UnmanagedType.LPStr)]
            public string lpData;
        }
        #endregion
        static int WINDOW_HANDLER = 0;
        private void button1_Click(object sender, EventArgs e)
        {
            IntPtr ip = (IntPtr)0;
            Process[] ppArr = System.Diagnostics.Process.GetProcessesByName(ProcessExtensions.Parent(Process.GetCurrentProcess()).ProcessName);
            if (ppArr.Length > 0)
            {
                Process p = ppArr[0];
                ip = p.MainWindowHandle;//获取主线程窗体句柄
            }            WINDOW_HANDLER = (int)ip;//主线程窗体句柄 接收窗体的句柄 这样子线程可以向主窗体发送消息了呵呵        
            if (WINDOW_HANDLER != 0)
            {
                byte[] sarr = System.Text.Encoding.Default.GetBytes(this.txtData.Text);
                int len = sarr.Length;
                COPYDATASTRUCT cds;
                cds.dwData = (IntPtr)100;
                cds.lpData = this.txtData.Text;
                cds.cbData = len + 1;
                SendMessage(WINDOW_HANDLER, WM_COPYDATA, 0, 010);
            }
        }
非常感谢3楼的回复