How to implement Cron Job for In App Purchase Receipt Verification?

During In-App Purchase implementation in a project. I am working on the ASP.NET WEB API side. I need to use CRON JOB for timely receipt verification on the server side. I want that in-app purchase receipt verification should happen timely from the server side. That is an old project so I want a solution in ASP.NET. I don't have the DI concept in that project.

You can use hangfire and configure hangfire inside the global.asax file as shown below

using Hangfire;
using Hangfire.SqlServer;

public class MvcApplication : System.Web.HttpApplication
{
    private IEnumerable GetHangfireServers()
    {
        GlobalConfiguration.Configuration
            .SetDataCompatibilityLevel(CompatibilityLevel.Version_170)
            .UseSimpleAssemblyNameTypeSerializer()
            .UseRecommendedSerializerSettings()
            .UseSqlServerStorage("Server=.\\SQLEXPRESS; Database=HangfireTest; Integrated Security=True;", new SqlServerStorageOptions
            {
                 CommandBatchMaxTimeout = TimeSpan.FromMinutes(5),
                 SlidingInvisibilityTimeout = TimeSpan.FromMinutes(5),
                 QueuePollInterval = TimeSpan.Zero,
                 UseRecommendedIsolationLevel = true,
                 DisableGlobalLocks = true
            });

        yield return new BackgroundJobServer();
    }

    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        RouteConfig.RegisterRoutes(RouteTable.Routes);

        HangfireAspNet.Use(GetHangfireServers);

        RecurringJob.AddOrUpdate("myjob", () => YourJobMethod(), cron.daily);
    }
}

Documentation:- https://docs.hangfire.io/en/latest/getting-started/aspnet-applications.html