From f103bf964d687ff6689c2048bfda491c6d49035e Mon Sep 17 00:00:00 2001
From: Andrew KeepCoding <andrewkeepcoding@gmail.com>
Date: Tue, 9 Sep 2025 17:56:43 +0900
Subject: [PATCH] =?UTF-8?q?Re-measure=20the=20Segmented=20control=20when?=
 =?UTF-8?q?=20any=20SegmentedItem=E2=80=99s=20Visibility=20toggles?=
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---
 .../Segmented/src/SegmentedItem/SegmentedItem.cs     | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/components/Segmented/src/SegmentedItem/SegmentedItem.cs b/components/Segmented/src/SegmentedItem/SegmentedItem.cs
index 6fc91435..e91af560 100644
--- a/components/Segmented/src/SegmentedItem/SegmentedItem.cs
+++ b/components/Segmented/src/SegmentedItem/SegmentedItem.cs
@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+
 namespace CommunityToolkit.WinUI.Controls;
 
 /// <summary>
@@ -20,6 +21,17 @@ public partial class SegmentedItem : ListViewItem
     public SegmentedItem()
     {
         this.DefaultStyleKey = typeof(SegmentedItem);
+        RegisterPropertyChangedCallback(VisibilityProperty, OnVisibilityChanged);
+    }
+
+    private void OnVisibilityChanged(DependencyObject sender, DependencyProperty dp)
+    {
+        // If the parent is a Segmented control with an EqualPanel,
+        // we need to invalidate measure to update the layout.
+        if ((this.Parent as Segmented)?.ItemsPanelRoot is EqualPanel panel)
+        {
+            panel.InvalidateMeasure();
+        }
     }
 
     /// <inheritdoc/>