在C#中卸载时，如何检查<service>.exe上的锁是否释放？

using System;
using System.Diagnostics;
using System.IO;

public class Program
{
    public static void Main()
    {
        string serviceName = "<service>.exe";
        string servicePath = @"C:\path\to\" + serviceName;

        // 获取<service>.exe的进程ID
        Process[] processes = Process.GetProcessesByName(serviceName);
        int targetPID = -1;
        foreach (Process process in processes)
        {
            if (process.MainModule.FileName.Equals(servicePath, StringComparison.OrdinalIgnoreCase))
            {
                targetPID = process.Id;
                break;
            }
        }

        if (targetPID != -1)
        {
            // 检查进程是否存在
            bool isProcessRunning = false;
            try
            {
                Process.GetProcessById(targetPID);
                isProcessRunning = true;
            }
            catch (ArgumentException)
            {
                // 进程不存在
            }

            if (isProcessRunning)
            {
                // 检查进程是否已经退出
                Process targetProcess = Process.GetProcessById(targetPID);
                if (!targetProcess.HasExited)
                {
                    // 检查进程是否释放了文件锁
                    try
                    {
                        using (FileStream fileStream = File.Open(servicePath, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
                        {
                            // 文件锁已经释放
                            Console.WriteLine("文件锁已经释放");
                        }
                    }
                    catch (IOException)
                    {
                        // 文件锁未释放
                        Console.WriteLine("文件锁未释放");
                    }
                }
            }
        }
    }
}