Commandline: Longname being ignored

[firebellys]

I have an option for a start date.
[Option('s', "startdate", Required = false, HelpText

and am using the -startdate 7/1/2020 as the arg

But no matter what I do, the args always end up being parsed as a shortname
"nddate 7/1/2020"

I would expect it to be 7/1/2020 and clean up that other stuff.

• Language: C#
• Framework: .Net Core 3.1
• OS: OSX 10.14
• IDE: Visual Studio Code

[moh-hassan]

and am using the -startdate 7/1/2020 as the arg
But no matter what I do, the args always end up being parsed as a shortname
"nddate 7/1/2020"

It seems you use single dash. It should be, using double dash

--startdate 7/1/2020

Just for acceptable datetime format, check format of datetime based on CultureInfo.CurrentCulture , see also Multi Culture Support

I test in the same your Environment with OS: Linux Ubuntu 20.04 and datetime 7/1/2020 M/dd/yyyy is accepted as its format match CultureInfo.CurrentCulture datetime format.

Can you provide the property of start date? What is nddate?

[firebellys]

nddate is just enddate being cut off. I'm assuming because i did -enddate, it assumed I was using -e as an option so it added the nddate as part of the string instead of the arg.

Here's a breakdown of what I see.

[Option('f', "folderId", Required = true, HelpText = "Required: The folder id to scan.")]
public string FolderId { get; set; }

Arg Input -f 123455
Expected Arg Result: 123455
Actual Arg Result is: 123455

Arg Input -folderId 123455
Expected Arg Result: 123455
Actual Arg Result is: olderId 123455

Arg Input --folderId 123455
Expected Arg Result: 123455
Actual Arg Result is: Option 'folderId 123455' is unknown. Required option f, folderId is missing

[moh-hassan]

Do you pass commandline from Unix shell. Can you show:
Environment.Commandline
Environment.GetCommandLineArgs()

for 2nd, 3rd case.

[firebellys]

For more reference, I am using the launch options json in VS Code

    "configurations": [
        {
            "name": ".NET Core Launch (console)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            "program": "${workspaceFolder}/bin/Debug/netcoreapp3.1/ReportingTool.dll",
            "args": ["--folderId 123455", "--startdate 10/12/19", "--enddate 7/1/2020"],
            "cwd": "${workspaceFolder}",
            "console": "internalConsole",
            "stopAtEntry": false
        },
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickProcess}"
        }
    ]

2nd case

.../ReportingTool.dll "-folderId 123455" "-startdate 10/12/19" "-enddate 7/1/2020"
.../bin/Debug/netcoreapp3.1/ReportingTool.dll
-folderId 123455
-startdate 10/12/19
-enddate 7/1/2020

3rd case

.../ReportingTool.dll "--folderId 123455" "--startdate 10/12/19" "--enddate 7/1/2020"
.../bin/Debug/netcoreapp3.1/ReportingTool.dll
--folderId 123455
--startdate 10/12/19
--enddate 7/1/2020

[moh-hassan]

I find something interesting in the commandline args in launch.json which interpret the values in the Environment.GetCommandLineArgs()

"args": ["--folderId 123455", "--startdate 10/12/19", "--enddate 7/1/2020"]

That is invalid arguments because every option name and value are merged together, e.g, the argument "--folderId 123455" should be two arguments like: "--folderId" , "123455"

To correct the behaviour of the parser, modify args in launch.json as:

"args": ["--folderId", "123455", "--startdate", "10/12/19", "--enddate", "7/1/2020"]

Can you try and feedback if this resolved your issue?

[firebellys]

2nd Case
the result was just olderId, the ID was skipped. But this is expected?

3rd Case
Works, I think you found the issue.

[moh-hassan]

Thanks for feedback.
BTW, If you want to merge options(without space separator), it can be as:
ShortNames
if Short option is 'sand value12345'
Argument can be: -s12345

For LongNames
use = between option name and value, like:

--folderId=123455

Alternative argument can be:

"args": ["--folderId=123455", "--startdate=10/12/19", "--enddate=7/1/2020"]
Or
"args": ["-f123455", "-s10/12/19", "--enddate=7/1/2020"]

See Commandline grammer