How to determine if starting inside a windows service?

Question

Currently I\'m checking it in the following way:

if (Environment.UserInteractive)
    Application.Run(new ServiceControllerForm(service));
else
    ServiceBase.R         


        

Answer 1

You can check if the process or any of its parent processes are listed as a service:

       var process = System.Diagnostics.Process.GetCurrentProcess();
       var parent = process.Parent();
       var procIsService = process?.IsService;
       var parentIsService = parent?.IsService;
       ...

public static class Extensions
{
    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));
    }

    public static bool IsService(this Process process)
    {
        using (ManagementObjectSearcher Searcher = new ManagementObjectSearcher(
        "SELECT * FROM Win32_Service WHERE ProcessId =" + "\"" + process.Id + "\""))
        {
            foreach (ManagementObject service in Searcher.Get())
                return true;
        }
        return false;
    }
}