Listing Amazon resources using Amazon CloudFormation

This example shows you how to use the Amazon SDK for .NET to list the resources in Amazon CloudFormation stacks. The example uses the low-level API. The application takes no arguments, but simply gathers information for all stacks that are accessible to the user's credentials and then displays information about those stacks.

using System;
using System.Threading.Tasks;
using Amazon.CloudFormation;
using Amazon.CloudFormation.Model;

namespace CFNListResources
{
  class Program
  {
    static async Task Main(string[] args)
    {
      // Create the CloudFormation client
      var cfnClient = new AmazonCloudFormationClient();

      // List the resources for each stack
      await ListResources(cfnClient, await cfnClient.DescribeStacksAsync());
    }

    //
    // Method to list stack resources and other information
    private static async Task ListResources(
      IAmazonCloudFormation cfnClient, DescribeStacksResponse responseDescribeStacks)
    {
      Console.WriteLine("Getting CloudFormation stack information...");

      foreach (Stack stack in responseDescribeStacks.Stacks)
      {
        // Basic information for each stack
        Console.WriteLine("\n------------------------------------------------");
        Console.WriteLine($"\nStack: {stack.StackName}");
        Console.WriteLine($"  Status: {stack.StackStatus.Value}");
        Console.WriteLine($"  Created: {stack.CreationTime}");

        // The tags of each stack (etc.)
        if(stack.Tags.Count > 0)
        {
          Console.WriteLine("  Tags:");
          foreach (Tag tag in stack.Tags)
            Console.WriteLine($"    {tag.Key}, {tag.Value}");
        }

        // The resources of each stack
        DescribeStackResourcesResponse responseDescribeResources =
          await cfnClient.DescribeStackResourcesAsync(new DescribeStackResourcesRequest{
            StackName = stack.StackName});
        if(responseDescribeResources.StackResources.Count > 0)
        {
          Console.WriteLine("  Resources:");
          foreach(StackResource resource in responseDescribeResources.StackResources)
            Console.WriteLine($"    {resource.LogicalResourceId}: {resource.ResourceStatus}");
        }
      }
      Console.WriteLine("\n------------------------------------------------");
    }
  }
}