From d3c03f787d787cc0612c08e2ef6a37e76f4386f5 Mon Sep 17 00:00:00 2001
From: yk35 <k.yoshi.k@gmail.com>
Date: Thu, 9 May 2024 14:04:51 +0900
Subject: [PATCH] Fixed a NullReferenceException that occurs when selecting the
 BoundingBox item of a linked element. (#28)

---
 .../DataModel/MemberAccessors/Element/Element_BoundingBox.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sources/RevitDBExplorer/Domain/DataModel/MemberAccessors/Element/Element_BoundingBox.cs b/sources/RevitDBExplorer/Domain/DataModel/MemberAccessors/Element/Element_BoundingBox.cs
index 96ebfef..2ed951c 100644
--- a/sources/RevitDBExplorer/Domain/DataModel/MemberAccessors/Element/Element_BoundingBox.cs
+++ b/sources/RevitDBExplorer/Domain/DataModel/MemberAccessors/Element/Element_BoundingBox.cs
@@ -20,7 +20,10 @@ public Element_BoundingBox() : base((document, element) => element.get_BoundingB
         private static IEnumerable<SnoopableObject> Snoop(Document document, Element element)
         {
             yield return new SnoopableObject(document, null, new[] { new SnoopableObject(document, element.get_BoundingBox(null)) }) { NamePrefix = "view:" };
-            yield return new SnoopableObject(document, null, new[] { new SnoopableObject(document, element.get_BoundingBox(document.ActiveView)) }) { NamePrefix = "view:", Name = "Active view: " + document.ActiveView.Name };
+            if (document.ActiveView != null)
+            {
+                yield return new SnoopableObject(document, null, new[] { new SnoopableObject(document, element.get_BoundingBox(document.ActiveView)) }) { NamePrefix = "view:", Name = "Active view: " + document.ActiveView.Name };
+            }
        
         }
     }