From caf6a9c8a4ac11571ea2d0701fe0c7bc89e65d4d Mon Sep 17 00:00:00 2001
From: ClemensFischer <fischer.clemens@gmail.com>
Date: Sat, 19 Nov 2022 17:54:37 +0100
Subject: [PATCH] Update MapScale.cs

---
 MapControl/Shared/MapScale.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MapControl/Shared/MapScale.cs b/MapControl/Shared/MapScale.cs
index 71ea8dc4..91c54e59 100644
--- a/MapControl/Shared/MapScale.cs
+++ b/MapControl/Shared/MapScale.cs
@@ -70,10 +70,10 @@ namespace MapControl
         protected override Size MeasureOverride(Size availableSize)
         {
             var size = new Size();
+            double scale;
 
-            if (ParentMap != null)
+            if (ParentMap != null && (scale = ParentMap.GetScale(ParentMap.Center).X) > 0d)
             {
-                var scale = ParentMap.GetScale(ParentMap.Center).X;
                 var length = MinWidth / scale;
                 var magnitude = Math.Pow(10d, Math.Floor(Math.Log10(length)));