Running a C# program with command line prompts in Visual Studio Code

Run with Terminal

When you run your code using terminal you must add ' -- ' to tell dotnet you are running your code with an argument/s

C:>dotnet run -- <your arguments here>

Run with Debugger

• Locate your .vscode folder inside your project if not create one.
• Open the launch.json file
• You will see a json object and add your arguments inside the "args" key.

launch.json

    "configurations": [
        {
            "name": ".NET Core Launch (console)",
            "args": [], // PUT YOUR ARGUMENTS HERE
             ...
        }
    ]

Since OP is specifically asking about how to do this in Visual Studio Code, they are likely using VSCode's run feature (not the dotnet CLI as other answers assume), to run their application. In this case, the proper way to supply command line arguments is via the .vscode\launch.json file.

Add an args array attribute to your configuration and populate it with the arguments you would like to pass.

"configurations": [
    {
        // ... ,
        "args": ["-arg1", "-arg2"]
    }

I tried to add a comment to Nico's answer but I lack sufficient reputation points. I was confused by the dash character in front of each arg: "-arg1 -arg2 (etc)". For clarity I would like to point out that .NET Core 2.1 seems to not need this. In the case of my console app, it takes a date for the first arg, an integer for the second, then an operator (+ or -) for the third arg. If I entered the following:

C:\>dotnet run -- -7/13/2018 -30 -+

I found that the leading dash in front of each arg was passed into the program along with the intended arg and I ended up trying to date parse "-7/13/2018"

I got the expected result when I entered it like this:

C:\>dotnet run -- 7/13/2018 30 +

1. Right click on your project
2. Click Properties
3. Click Debug in the Properties window
4. Under "start options:"
5. Add a "Command Line Argument:" = run -t
6. Add a "Working Directory:" try the bin\debug directory