From be4374a2b2de7a7504ba0b31fdb5d20ef0be9155 Mon Sep 17 00:00:00 2001
From: Rolf Kristensen <sweaty1@hotmail.com>
Date: Thu, 30 Jan 2025 20:21:23 +0100
Subject: [PATCH] SimpleLayout - FromString avoid first chance exception when
 unknown layoutrenderer-type

---
 src/NLog/Layouts/LayoutParser.cs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/NLog/Layouts/LayoutParser.cs b/src/NLog/Layouts/LayoutParser.cs
index 5935dfa58e..746d64512c 100644
--- a/src/NLog/Layouts/LayoutParser.cs
+++ b/src/NLog/Layouts/LayoutParser.cs
@@ -588,7 +588,15 @@ private static LayoutRenderer GetLayoutRenderer(string typeName, ConfigurationIt
 
             try
             {
-                layoutRenderer = configurationItemFactory.LayoutRendererFactory.CreateInstance(typeName);
+                if (throwConfigExceptions == false && !configurationItemFactory.LayoutRendererFactory.TryCreateInstance(typeName, out layoutRenderer))
+                {
+                    InternalLogger.Debug("Failed to create LayoutRenderer with unknown type-alias: '{0}'", typeName);
+                    return new LiteralLayoutRenderer(string.Empty); // replace with empty values
+                }
+                else
+                {
+                    layoutRenderer = configurationItemFactory.LayoutRendererFactory.CreateInstance(typeName);
+                }
             }
             catch (NLogConfigurationException ex)
             {