dotnet-sdk/examples/Workflow/WorkflowConsoleApp/Activities/RequestApprovalActivity.cs

using Dapr.Workflow;
using Microsoft.Extensions.Logging;

namespace WorkflowConsoleApp.Activities
{
    public class RequestApprovalActivity : WorkflowActivity<OrderPayload, object>
    {
        readonly ILogger logger;

        public RequestApprovalActivity(ILoggerFactory loggerFactory)
        {
            this.logger = loggerFactory.CreateLogger<RequestApprovalActivity>();
        }

        public override Task<object> RunAsync(WorkflowActivityContext context, OrderPayload input)
        {
            string orderId = context.InstanceId.ToString();
            this.logger.LogInformation("Requesting approval for order {orderId}", orderId);

            return Task.FromResult<object>(null);
        }
    }
}