How to pass arguments when debugging a dot net application

If you are using VS 2022, go to the project properties -> Debug -> General, and then click on "Open debug launch profiles UI".

Right click your project in VS -> Properties -> Debug tab

There is an area where you can specify command line arguments. When you debug your project, VS will start it up with these args.

Go to the project properties - Debug section, and under the Start Options heading there is a section for Command line arguments.

In case someone is using VS Code for their project, you guys can just open the launch.json in the .vscode folder and under configurations you can just add an args key value pair like this:

"configurations": [
    {
        "name": ".NET Core Launch (console)",
        "type": "coreclr",
        "request": "launch",
        "preLaunchTask": "build",
        "args": ["What command you use to list all docker images"],
        "cwd": "${workspaceFolder}",
        "console": "internalConsole",
        "stopAtEntry": false
    }
]

It is called 'Application arguments' now

Here's a solution for those who are using Visual Studio for Mac (tested on 17.3 preview). Navigate this via a top dropdown menu:

Project -> {your project name} Properties -> Run -> Configurations -> Default -> Arguments:

and enter arguments in this field.

This information used to be persisted in a ProjectName.csproj.user file. In the new .csproj format, this information is persisted in Properties\launchsettings.json. My current version of Visual Studio (17.3.2 apparently reads both of those when debugging.

If you ever see unexpected arguments, this may be the cause.

More detail here.

Sometimes it can be more convenient to specify the arguments in Program.cs:

static void Main(string[] args)
{
#if DEBUG
    args = ["arg1", "arg2"]; // (C# 12 collection expression)
#endif
    ...
}

To debug the application we need argument values and we can set the values to arguments directly in debug screen.

Then by debugging you can check if the correct values, formats etc handled.