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create-a-lambda-based-command.md

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Command based on a lambda

If you need to define command with some dynamism, you can define command that are based on a lambda for its execution.

To define the command, you have to call the extension method AddCommand on the CommandLineParserBuilder. The method expects:

  • the name of the command
  • an Action<CommandBuilder> to define the options of the command (and other parameters of the command)
  • a Func<CommandExecutionContext, Task<int>> that holds the execution of the command. The CommandExecutionContext is the parameter that allows you to get the value of the different options.