From 46775cb4f85d479f4e60b92f9a6064ccee22fd36 Mon Sep 17 00:00:00 2001
From: Randell L Hodges <rhodges@taxfodder.com>
Date: Wed, 8 Jun 2022 09:38:37 -0500
Subject: [PATCH] Don't attempt to configure a job if the expression is null.
 Useful if you comment out the configuration in the appsettings.json file.

---
 src/EasyCronJob.AutoConfigurer/Startup.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/EasyCronJob.AutoConfigurer/Startup.cs b/src/EasyCronJob.AutoConfigurer/Startup.cs
index 00aec12..fda0a29 100644
--- a/src/EasyCronJob.AutoConfigurer/Startup.cs
+++ b/src/EasyCronJob.AutoConfigurer/Startup.cs
@@ -142,6 +142,8 @@ public static IServiceCollection AutoConfigurer(this IServiceCollection services
         private static IServiceCollection ConfigureCronServices(IServiceCollection services, Type item, IServiceProvider serviceProvider)
         {
             var cronParameters = FindServiceParameter(services, item.Name);
+            if (string.IsNullOrWhiteSpace(cronParameters.Item1))
+                return services;
             var ctors = item.GetConstructors().FirstOrDefault();
             var parameters = ctors.GetParameters();
             List<object> ctorServices = new List<object>();