From bbe7d0abb255863ed05b7ea1eee32be47e09df37 Mon Sep 17 00:00:00 2001
From: Mario Uhlmann <Mario.Uhlmann@gmx.net>
Date: Sat, 11 Jun 2022 13:23:44 +0200
Subject: [PATCH] foreach .. "items.OfType<" replaced with traditional for-loop

---
 src/Avalonia.Base/Styling/Styles.cs | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/Avalonia.Base/Styling/Styles.cs b/src/Avalonia.Base/Styling/Styles.cs
index 1d0be96ac9..e4c3371007 100644
--- a/src/Avalonia.Base/Styling/Styles.cs
+++ b/src/Avalonia.Base/Styling/Styles.cs
@@ -2,7 +2,6 @@ using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Collections.Specialized;
-using System.Linq;
 using Avalonia.Collections;
 using Avalonia.Controls;
 
@@ -246,9 +245,12 @@ namespace Avalonia.Styling
         {
             if (owner is not null)
             {
-                foreach (var resourceProvider in items.OfType<IResourceProvider>())
+                for (var i = 0; i < items.Count; ++i)
                 {
-                    resourceProvider.AddOwner(owner);
+                    if (items[i] is IResourceProvider provider)
+                    {
+                        provider.AddOwner(owner);
+                    }
                 }
 
                 (owner as IStyleHost)?.StylesAdded(ToReadOnlyList<IStyle>(items));
@@ -264,9 +266,12 @@ namespace Avalonia.Styling
         {
             if (owner is not null)
             {
-                foreach (var resourceProvider in items.OfType<IResourceProvider>())
+                for (var i = 0; i < items.Count; ++i)
                 {
-                    resourceProvider.RemoveOwner(owner);
+                    if (items[i] is IResourceProvider provider)
+                    {
+                        provider.RemoveOwner(owner);
+                    }
                 }
 
                 (owner as IStyleHost)?.StylesRemoved(ToReadOnlyList<IStyle>(items));