From 7536b8b2a31af8d96bcb563bd0b7748510935682 Mon Sep 17 00:00:00 2001
From: rabbitism <popmessiah@hotmail.com>
Date: Wed, 1 Feb 2023 21:40:46 +0800
Subject: [PATCH] fix: simplify storage extraction.

---
 .../Pages/ManagedFileChooserDemo.axaml.cs              | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/demo/Semi.Avalonia.Demo/Pages/ManagedFileChooserDemo.axaml.cs b/demo/Semi.Avalonia.Demo/Pages/ManagedFileChooserDemo.axaml.cs
index 341b5a7..18d5ab2 100644
--- a/demo/Semi.Avalonia.Demo/Pages/ManagedFileChooserDemo.axaml.cs
+++ b/demo/Semi.Avalonia.Demo/Pages/ManagedFileChooserDemo.axaml.cs
@@ -52,16 +52,10 @@ public partial class ManagedFileChooserDemo : UserControl
     
     private IStorageProvider? GetStorageProvider()
     {
-        if (this.VisualRoot is Window w)
-        {
-            return w.StorageProvider;
-        }
-        return null;
+        var topLevel = TopLevel.GetTopLevel(this);
+        return topLevel?.StorageProvider;
     }
 
-    Window GetWindow() => this.VisualRoot as Window ?? throw new NullReferenceException("Invalid Owner");
-    TopLevel GetTopLevel() => this.VisualRoot as TopLevel ?? throw new NullReferenceException("Invalid Owner");
-    
     List<FilePickerFileType>? GetFileTypes()
     {
         return new List<FilePickerFileType>