From 27fb51564c753dd9412aad221ee48b360b9a0251 Mon Sep 17 00:00:00 2001
From: Rolf Kristensen <sweaty1@hotmail.com>
Date: Sun, 26 May 2019 01:00:42 +0200
Subject: [PATCH] ObjectReflectionCache - Skip property-reflection for
 IFormattable

---
 src/NLog/Internal/ObjectReflectionCache.cs | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/NLog/Internal/ObjectReflectionCache.cs b/src/NLog/Internal/ObjectReflectionCache.cs
index 5571c5d8cd..525b5e29cc 100644
--- a/src/NLog/Internal/ObjectReflectionCache.cs
+++ b/src/NLog/Internal/ObjectReflectionCache.cs
@@ -177,10 +177,7 @@ private static ObjectPropertyInfos BuildObjectPropertyInfos(object value, Type o
 
         private static bool ConvertToString(Type objectType)
         {
-            if (objectType == typeof(Guid))
-                return true;
-
-            if (objectType == typeof(TimeSpan))
+            if (typeof(IFormattable).IsAssignableFrom(objectType))
                 return true;
 
             if (typeof(Uri).IsAssignableFrom(objectType))