How can a C# Windows Console application tell if it is run interactively

问题

How can a Windows console application written in C# determine whether it is invoked in a non-interactive environment (e.g. from a service or as a scheduled task) or from an environment capable of user-interaction (e.g. Command Prompt or PowerShell)?

回答1:

Environment.UserInteractive Property

回答2:

To determine if a .NET application is running in GUI mode:

bool is_console_app = Console.OpenStandardInput(1) != Stream.Null;

回答3:

I haven't tested it, but Environment.UserInteractive looks promising.

回答4:

If all you're trying to do is to determine whether the console will continue to exist after your program exits (so that you can, for example, prompt the user to hit Enter before the program exits), then all you have to do is to check if your process is the only one attached to the console. If it is, then the console will be destroyed when your process exits. If there are other processes attached to the console, then the console will continue to exist (because your program won't be the last one).

For example*:

using System;
using System.Runtime.InteropServices;

namespace CheckIfConsoleWillBeDestroyedAtTheEnd
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            // ...

            if (ConsoleWillBeDestroyedAtTheEnd())
            {
                Console.WriteLine("Press any key to continue . . .");
                Console.ReadKey();
            }
        }

        private static bool ConsoleWillBeDestroyedAtTheEnd()
        {
            var processList = new uint[1];
            var processCount = GetConsoleProcessList(processList, 1);

            return processCount == 1;
        }

        [DllImport("kernel32.dll", SetLastError = true)]
        static extern uint GetConsoleProcessList(uint[] processList, uint processCount);
    }
}

(*) Adapted from code found here.

回答5:

A possible improvement of Glenn Slayden's solution:

bool isConsoleApplication = Console.In != StreamReader.Null;

来源：https://stackoverflow.com/questions/1188658/how-can-a-c-sharp-windows-console-application-tell-if-it-is-run-interactively

标签

console-application

user-interaction