Add subcommands and custom validation example fix

[eagletofly]

Type of issue

Code does not work

Description

internal static void DeleteFromFile(FileInfo file, string[] searchTerms)
    {
        Console.WriteLine("Deleting from file");

        var lines = File.ReadLines(file.FullName).Where(line => searchTerms.All(s => !line.Contains(s)));
        File.WriteAllLines(file.FullName, lines);
    }

-delete command execute throw System.IO.IOException；

fix example:
var lines = File.ReadLines(file.FullName).Where(line => searchTerms.All(s => !line.Contains(s))).ToList();

Page URL

https://learn.microsoft.com/en-us/dotnet/standard/commandline/get-started-tutorial

Content source URL

https://github.com/dotnet/docs/blob/main/docs/standard/commandline/get-started-tutorial.md

Document Version Independent Id

fa160b1d-66ed-8c5d-37cd-b7e02443e9f1

Platform Id

0f144444-1ce3-cdf7-87a6-c659d44e08d3

Article author

@gewarren

Metadata

• ID: 7705dc41-7297-0807-7e9c-2e6548c26b84
• PlatformId: 0f144444-1ce3-cdf7-87a6-c659d44e08d3
• Service: dotnet-fundamentals

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