chore: use file-scoped namespace

src/Shared/HandyControlDemo_Shared/Data/Model/DemoInfoModel.cs

@@ -1,38 +1,37 @@
 using System.Collections.Generic;
 using GalaSoft.MvvmLight;
 
-namespace HandyControlDemo.Data
+namespace HandyControlDemo.Data;
+
+public class DemoInfoModel : ViewModelBase
 {
-    public class DemoInfoModel : ViewModelBase
+    public string Key { get; set; }
+
+    private string _title;
+
+    public string Title
     {
-        public string Key { get; set; }
-
-        private string _title;
-
-        public string Title
-        {
-            get => _title;
+        get => _title;
 #if NET40
             set => Set(nameof(Title), ref _title, value);
 #else
-            set => Set(ref _title, value);
+        set => Set(ref _title, value);
 #endif
-        }
+    }
 
-        private int _selectedIndex;
+    private int _selectedIndex;
 
-        public int SelectedIndex
-        {
-            get => _selectedIndex;
+    public int SelectedIndex
+    {
+        get => _selectedIndex;
 #if NET40
             set => Set(nameof(SelectedIndex), ref _selectedIndex, value);
 #else
-            set => Set(ref _selectedIndex, value);
+        set => Set(ref _selectedIndex, value);
 #endif   
-        }
-
-        public bool IsGroupEnabled { get; set; }
-
-        public IList<DemoItemModel> DemoItemList { get; set; }
     }
-}
+
+    public bool IsGroupEnabled { get; set; }
+
+    public IList<DemoItemModel> DemoItemList { get; set; }
+}