From c53297085f8a3ad21ebfe4bad4e07eadd1c1f41d Mon Sep 17 00:00:00 2001
From: Jumar Macato <hikari.netto23@gmail.com>
Date: Thu, 30 May 2019 19:06:13 +0800
Subject: [PATCH] Fix OnCellAttachedPropertyChanged

---
 src/Avalonia.Controls/Grid.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Controls/Grid.cs b/src/Avalonia.Controls/Grid.cs
index c3da8b7a34..9fb5098030 100644
--- a/src/Avalonia.Controls/Grid.cs
+++ b/src/Avalonia.Controls/Grid.cs
@@ -30,7 +30,10 @@ namespace Avalonia.Controls
         static Grid()
         {
             ShowGridLinesProperty.Changed.AddClassHandler<Grid>(OnShowGridLinesPropertyChanged);
-            AffectsParentMeasure<Grid>(ColumnProperty, ColumnSpanProperty, RowProperty, RowSpanProperty);
+            ColumnProperty.Changed.AddClassHandler<Grid>(OnCellAttachedPropertyChanged);
+            ColumnSpanProperty.Changed.AddClassHandler<Grid>(OnCellAttachedPropertyChanged);
+            RowProperty.Changed.AddClassHandler<Grid>(OnCellAttachedPropertyChanged);
+            RowSpanProperty.Changed.AddClassHandler<Grid>(OnCellAttachedPropertyChanged);
         }
 
         /// <summary>
@@ -2893,7 +2896,7 @@ namespace Avalonia.Controls
 
             if (child != null)
             {
-                Grid grid = VisualTreeHelper.GetParent(child) as Grid;
+                Grid grid = child.GetVisualParent<Grid>();
                 if (    grid != null
                     &&  grid.ExtData != null
                     &&  grid.ListenToNotifications  )