From 6e02f7608897af8723f6357f961c34c9304d1d7c Mon Sep 17 00:00:00 2001
From: Kogel <42330679+kogel-net@users.noreply.github.com>
Date: Mon, 10 Apr 2023 15:03:58 +0800
Subject: [PATCH] fix(Menuable) : calc ComputedTop(#376)

---
 src/Component/BlazorComponent/Mixins/Menuable/BMenuable.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/Component/BlazorComponent/Mixins/Menuable/BMenuable.cs b/src/Component/BlazorComponent/Mixins/Menuable/BMenuable.cs
index 80806605a..89adfeacc 100644
--- a/src/Component/BlazorComponent/Mixins/Menuable/BMenuable.cs
+++ b/src/Component/BlazorComponent/Mixins/Menuable/BMenuable.cs
@@ -131,6 +131,11 @@ protected double ComputedTop
 
                 double top = 0;
 
+                if (activator is null || content is null)
+                {
+                    return top;
+                }
+
                 if (Top) top += activator.Height - content.Height;
 
                 if (!IsDefaultAttach)