what am I doing wrong (null option in receiver lambda)?

[phi1ipp]

Hey guys,

Can anyone please tell me what I'm doing wrong with the following fragment

var aCommand = new Command("findCreator", handler: CommandHandler.Create<string>(async (string file) =>
{
    Console.WriteLine(file);
}));
aCommand.AddOption(new Option("--input", "input file name", new Argument<string>()));
root.AddCommand(aCommand);

root.InvokeAsync(args).Wait();

I run the app with app findCreator --input filename and getting file as null in my lambda.

Can anybody provide a hint please?

[jonsequitur]

It's not you, it's us. This is our most common gotcha. The binding is done by matching handler arguments to option or arguments by name. Rename string file to string input.

Also, you can use FileInfo instead of string if you like.

[phi1ipp]

Cool, thank you for the super prompt reply @jonsequitur!

It works now :) Yeah, I initially put it as FileInfo, but as I ran into issues I decided to make it bullet proof with a simple string. Turned out I ran into gotcha ;)

Cool, you can close it, or put it in a wiki.

Thank you for the cool library, keep going!

[jonsequitur]

Potential solution: #1012. Please comment.