Passing command line arguments to console application does not work

Question

I can't pass arguments to my console app. I tried it like this:

App.exe arg1
App.exe "arg1"
App.exe

When I run the app with arguments, the app quits running without any messages.

When debugging there is nothing in string[] args.

My C# project is a plain .net 4.5.2 command line project. My OS is Windows 10 x64.

Sample Code:

using System;
using System.Collections.ObjectModel;
using System.Management.Automation;

namespace Setup
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length == 0)
            {
                using (PowerShell psInstance = PowerShell.Create())
                {
                    string cmd = "Set-ExecutionPolicy RemoteSigned -Force; " +
                                 "echo \"Set-ExecutionPolicy RemoteSigned -Force\"; echo \"\"; " +
                                 "Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force; ";

                    psInstance.AddScript(cmd);

                    Collection<PSObject> PSOutput = psInstance.Invoke();

                    Console.WriteLine(psInstance.Streams.Error[0].ErrorDetails.Message);

                    foreach (var item in PSOutput)
                    {
                        if (item != null)
                        {
                            Console.WriteLine(item.BaseObject.ToString());
                        }
                    }
                    Console.ReadLine();
                }
            }
            else
            {
                // Will not work
                Console.WriteLine(args[0]);
            }
        }
    }
}

Does anyone have an idea?

Please include the code you have written for App.exe. It is probably something simple. — Adam G
– Adam G, Commented Jun 8, 2018 at 7:13
Are you sure you are passing arguments to your app? Assuming you run this from Visual Studio, is there anything in the text box Command line arguments on the Debug tab in the properties of your project? — heijp06
– heijp06, Commented Jun 8, 2018 at 8:12
@Marcus please see whether my answer helps you. If it doesn't, I will be very happy to help solve your actual problem. — Thomas Flinkow
– Thomas Flinkow, Commented Jun 8, 2018 at 9:42

Thomas Flinkow · Accepted Answer · 2018-06-08 09:42:02Z

I simplified your code a bit further; namely we will now look at

public class Program
{
    public static void Main(string[] args)
    {
        int numberOfArguments = args.Length;

        if (numberOfArguments > 0)
        {
            Console.WriteLine($"Count: {numberOfArguments} First: {args[0]}");
        }
        else
        {
            Console.WriteLine("No arguments were passed.");
        }

        Console.ReadLine(); // Keep the console open.
    }
}

so that we get an output either way.

Running this without any further ado will yield

No arguments were passed.

However, in Visual Studio, by going into

Project -> Properties -> Debug

we will now provide some command argument lines for debugging.

Running the program now will yield

Count: 3 First: -first

For real world use, you can then run the app (e.g. from the command line) like this:

app.exe -one /two three foo

and it will still get all of the command line arguments:

Count: 4 First: -one

CodeNotFound · Accepted Answer · 2018-06-08 08:22:36Z

0

It will be helpful if you can share the code.

Sample program to print zero position argument will be :

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(args[0]);
        }
    }
}

You can call it from commandline

ConsoleApplication1.exe argument1

edited Jun 8, 2018 at 8:22

CodeNotFound

23.4k10 gold badges75 silver badges73 bronze badges

answered Jun 8, 2018 at 7:35

Prateek Deshmukh

1356 bronze badges

Collectives™ on Stack Overflow

Passing command line arguments to console application does not work

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related