How to make the autocomplete handler work in Discord.Net? - discord

Question

I'm sorry if it sound a bit newbie, but i'm stuck trying to get working the AutocompleteHandler.
Following the documentation, i tried to create a very basic autocomplete system :
public class ExampleAutocompleteHandler : AutocompleteHandler
{
public override async Task<AutocompletionResult> GenerateSuggestionsAsync(IInteractionContext context, IAutocompleteInteraction autocompleteInteraction, IParameterInfo parameter, IServiceProvider services)
{
// Create a collection with suggestions for autocomplete
IEnumerable<AutocompleteResult> results = new[]
{
new AutocompleteResult("Name1", "value111"),
new AutocompleteResult("Name2", "value2")
};
// max - 25 suggestions at a time (API limit)
return AutocompletionResult.FromSuccess(results.Take(25));
}
}
In the module :
public class ItemModule : InteractionModuleBase
{
// you need to add `Autocomplete` attribute before parameter to add autocompletion to it
[SlashCommand("command_name", "command_description")]
public async Task ExampleCommand([Summary("parameter_name"), Autocomplete(typeof(ExampleAutocompleteHandler))] string parameterWithAutocompletion)
=> await RespondAsync($"Your choice: {parameterWithAutocompletion}");
}
I tried to register the handler as a Singleton, but nothing worked. It doesnt display the list when i type the commands.
I appreciate some help. Thanks in advance!

Answer 1

Indeed the documentation is currently missing this.
Just like Slash Commands, you need to handle the Autocompletion event and forward it to your interaction service.
On your discord client, handle the event
_client.AutocompleteExecuted += async (SocketAutocompleteInteraction arg) => {
var context = new Discord.Interactions.InteractionContext(_client, arg, arg.Channel);
await _interactionService.ExecuteCommandAsync(context,services: _serviceProvider);
};