[New article]: Create resource commands

[JamesNK]

Proposed topic or title

Create resource commands

Location in table of contents.

Custom integrations

Reason for the article

Aspire 9 introduces an API to add custom resource commands. People will want to know how to implement there own.

Mentioned in release notes here:

docs-aspire/docs/whats-new/dotnet-aspire-9-release-candidate-1.md

Lines 349 to 413 in da03508

	### Resource commands
	The app host supports adding custom commands to resources. This is useful when you want to run custom commands on a resource.
	> [!IMPORTANT]
	> These .NET Aspire dashboard commands are only available when running the dashboard locally. They are not available when running the dashboard in Azure Container Apps.
	The following example uses an extension method to add some additional commands.
	```csharp
	var builder = DistributedApplication.CreateBuilder(args);
	var cache = builder.AddRedis("cache")
	.WithClearCommand();
	builder.AddProject<Projects.WebApplication1>("api")
	.WithReference(cache)
	.WaitFor(cache);
	builder.Build().Run();
	```
	Custom commands can be added by calling the `WithCommand*` method and passing in the command to run:
	```csharp
	using Microsoft.Extensions.Diagnostics.HealthChecks;
	using StackExchange.Redis;
	public static class RedisCommandExtensions
	{
	public static IResourceBuilder<RedisResource> WithClearCommand(
	this IResourceBuilder<RedisResource> builder)
	{
	builder.WithCommand(
	"clear-cache",
	"Clear Cache",
	async context =>
	{
	var redisConnectionString = await builder.Resource.GetConnectionStringAsync() ??
	throw new InvalidOperationException(
	"Unable to get the Redis connection string.");
	using var connection = ConnectionMultiplexer.Connect(redisConnectionString);
	await connection.GetDatabase().ExecuteAsync("FLUSHALL");
	return CommandResults.Success();
	},
	context =>
	{
	if (context.ResourceSnapshot.HealthStatus is HealthStatus.Healthy)
	{
	return ResourceCommandState.Enabled;
	}
	return ResourceCommandState.Disabled;
	});
	return builder;
	}
	}
	```
	These commands can be run from the dashboard:
	:::image type="content" source="media/clear-cache-command.png" lightbox="media/clear-cache-command.png" alt-text="Clear cache command on dashboard":::

Article abstract

The article would talk about what resource commands are, show them in the dashbaord UI, and discuss examples of what custom commands can do.

It would then show code for an example custom command.

Relevant searches

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[afscrome]

Can you include docs on icon set, and where to find a list of icons from - e.g. DatabasePlugConnected. A list of icons can be found at https://github.com/microsoft/fluentui-system-icons/blob/main/icons_regular.md .