Discord.Net/docs/faq/commands/interaction.md

• Interaction commands in services
• • Module dependencies aren't getting populated by Property Injection?
  • How do I use this * interaction specific method/property?
  • InteractionService.ExecuteAsync() always returns a successful result, how do i access the failed command execution results?
  • How do I check if the executing user has * permission?
  • How do I send the HTTP Response from inside the command modules.
  • Is there a cleaner way of creating parameter choices other than using [Choice]?
  • How do I add an optional enum parameter but make the default value not visible to the user?
  • How does the InteractionService determine the generic TypeConverter to use for a parameter type?

Interaction commands in services

A chapter talking about the interaction service framework.
For questions about interactions in general, refer to the [Interactions FAQ]

Module dependencies aren't getting populated by Property Injection?

Make sure the properties are publicly accessible and publicly settable.

How do I use this * interaction specific method/property?

If your interaction context holds a down-casted version of the interaction object, you need to up-cast it.
Ideally, use pattern matching to make sure its the type of interaction you are expecting it to be.

InteractionService.ExecuteAsync() always returns a successful result, how do i access the failed command execution results?

If you are using RunMode.Async you need to setup your post-execution pipeline around CommandExecuted events.

How do I check if the executing user has * permission?

Refer to the [documentation about preconditions]

How do I send the HTTP Response from inside the command modules.

Set the RestResponseCallback property of [InteractionServiceConfig] with a delegate for handling HTTP Responses and use
RestInteractionModuleBase to create your command modules. RespondAsync() and DeferAsync() methods of this module base will use the
RestResponseCallback to create interaction responses.

Is there a cleaner way of creating parameter choices other than using [Choice]?

The default enum TypeConverter of the Interaction Service will
automatically register enums as multiple choice options.

How do I add an optional enum parameter but make the default value not visible to the user?

The default enum TypeConverter of the Interaction Service comes with [Hide] attribute that
can be used to prevent certain enum values from getting registered.

How does the InteractionService determine the generic TypeConverter to use for a parameter type?

It compares the target base type key of the
TypeConverter and chooses the one that sits highest on the inheritance hierarchy.

[Interactions FAQ]: xref: FAQ.Basics.Interactions
[InteractionServiceConfig]: xref:Discord.Interactions.InteractionServiceConfig
[documentation about preconditions]: xref: Guides.ChatCommands.Preconditions