misc: format code for consistency and readability.

demo/Semi.Avalonia.Demo/Pages/AboutUs.axaml.cs

@@ -2,10 +2,8 @@ using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using System.Windows.Input;
-using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Interactivity;
-using Avalonia.Markup.Xaml;
 using Avalonia.Platform.Storage;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
@@ -31,7 +29,7 @@ public partial class AboutUs : UserControl
     }
 }
 
-public partial class AboutUsViewModel: ObservableObject
+public partial class AboutUsViewModel : ObservableObject
 {
     public ICommand NavigateCommand { get; set; }
 
@@ -55,6 +53,5 @@ public partial class AboutUsViewModel: ObservableObject
         {
             await Launcher.LaunchUriAsync(new Uri(uri));
         }
-        
     }
 }

demo/Semi.Avalonia.Demo/Pages/AutoCompleteBoxDemo.axaml.cs

@@ -1,8 +1,6 @@
-using System.Collections.ObjectModel;
-using Avalonia;
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using Avalonia.Controls;
 using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace Semi.Avalonia.Demo.Pages;
@@ -16,14 +14,13 @@ public partial class AutoCompleteBoxDemo : UserControl
     }
 }
 
-public class AutoCompleteBoxDemoViewModel: ObservableObject
+public class AutoCompleteBoxDemoViewModel : ObservableObject
 {
     public ObservableCollection<StateData> States { get; set; }
 
     public AutoCompleteBoxDemoViewModel()
     {
         States = new ObservableCollection<StateData>(GetStates());
-        
     }
 
     private static List<StateData> GetStates()

demo/Semi.Avalonia.Demo/Pages/BorderDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/ButtonDemo.axaml

@@ -112,14 +112,14 @@
                     IsEnabled="False" />
             </StackPanel>
             <StackPanel Orientation="Horizontal" Spacing="8">
-                <DropDownButton Content="Default" Classes="Success"/>
+                <DropDownButton Content="Default" Classes="Success" />
-                <DropDownButton Content="Solid" Theme="{DynamicResource SolidDropDownButton}" Classes="Success"/>
+                <DropDownButton Content="Solid" Theme="{DynamicResource SolidDropDownButton}" Classes="Success" />
-                <DropDownButton Content="Outline" Theme="{DynamicResource OutlineDropDownButton}" Classes="Success"/>
+                <DropDownButton Content="Outline" Theme="{DynamicResource OutlineDropDownButton}" Classes="Success" />
-                <DropDownButton Content="Borderless" Theme="{DynamicResource BorderlessDropDownButton}" Classes="Success"/>
+                <DropDownButton Content="Borderless" Theme="{DynamicResource BorderlessDropDownButton}" Classes="Success" />
-                <DropDownButton Content="Default" Classes="Success" IsEnabled="False"/>
+                <DropDownButton Content="Default" Classes="Success" IsEnabled="False" />
-                <DropDownButton Content="Solid" Theme="{DynamicResource SolidDropDownButton}" Classes="Success" IsEnabled="False"/>
+                <DropDownButton Content="Solid" Theme="{DynamicResource SolidDropDownButton}" Classes="Success" IsEnabled="False" />
-                <DropDownButton Content="Outline" Theme="{DynamicResource OutlineDropDownButton}" Classes="Success" IsEnabled="False"/>
+                <DropDownButton Content="Outline" Theme="{DynamicResource OutlineDropDownButton}" Classes="Success" IsEnabled="False" />
-                <DropDownButton Content="Borderless" Theme="{DynamicResource BorderlessDropDownButton}" Classes="Success" IsEnabled="False"/>
+                <DropDownButton Content="Borderless" Theme="{DynamicResource BorderlessDropDownButton}" Classes="Success" IsEnabled="False" />
             </StackPanel>
             <StackPanel Orientation="Horizontal" Spacing="8">
                 <DropDownButton Classes="Small" Content="Small" />

demo/Semi.Avalonia.Demo/Pages/ButtonDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/ButtonSpinnerDemo.axaml.cs

@@ -1,7 +1,5 @@
 using System;
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -31,7 +29,6 @@ public partial class ButtonSpinnerDemo : UserControl
 
             txtBox.Text = _mountains[value];
         }
-
     }
 
     private readonly string[] _mountains = new[]

demo/Semi.Avalonia.Demo/Pages/CalendarDatePickerDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/CalendarDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class CalendarDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/CarouselDemo.axaml.cs

@@ -1,7 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Interactivity;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/CheckBoxDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/ColorPickerDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/DataGridDemo.axaml.cs

@@ -1,18 +1,4 @@
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Collections.ObjectModel;
-using System.ComponentModel;
-using System.Linq;
-using Avalonia;
-using Avalonia.Collections;
 using Avalonia.Controls;
-using Avalonia.Controls.Primitives;
-using Avalonia.Data;
-using Avalonia.Input;
-using Avalonia.Input.Raw;
-using Avalonia.Markup.Xaml;
-using Avalonia.Threading;
 using Semi.Avalonia.Demo.ViewModels;
 
 namespace Semi.Avalonia.Demo.Pages;

demo/Semi.Avalonia.Demo/Pages/DataValidationErrorsDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class DataValidationErrorsDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/DatePickerDemo.axaml.cs

@@ -1,7 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
-using Avalonia.Media;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -11,14 +8,4 @@ public partial class DatePickerDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
-
-    public override void Render(DrawingContext context)
-    {
-        base.Render(context);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/ExpanderDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/FlyoutDemo.axaml.cs

@@ -1,7 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.LogicalTree;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/GridSplitterDemo.axaml.cs

@@ -1,5 +1,4 @@
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -9,9 +8,4 @@ public partial class GridSplitterDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/HyperlinkButtonDemo.axaml.cs

@@ -1,7 +1,4 @@
-using System;
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/LabelDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/ListBoxDemo.axaml

@@ -16,7 +16,7 @@
                 Header="Default">
                 <ScrollViewer>
                     <StackPanel Spacing="20">
-                        <TextBlock Text="Theme: Default"/>
+                        <TextBlock Text="Theme: Default" />
                         <ListBox ItemsSource="{Binding $parent[local:ListBoxDemo].Items}" />
                         <ListBox IsEnabled="False">
                             <ListBoxItem IsSelected="True">Avalonia</ListBoxItem>
@@ -31,7 +31,7 @@
                 Theme="{DynamicResource GroupBox}"
                 Header="RadioGroupListBox">
                 <StackPanel Spacing="20">
-                    <TextBlock Text="Theme: RadioGroupListBox"/>
+                    <TextBlock Text="Theme: RadioGroupListBox" />
                     <ListBox
                         Theme="{DynamicResource RadioGroupListBox}"
                         ItemsSource="{Binding $parent[local:ListBoxDemo].Items}" />
@@ -40,7 +40,7 @@
                         <ListBoxItem IsSelected="True">WPF</ListBoxItem>
                     </ListBox>
 
-                    <TextBlock Text="Theme: ButtonRadioGroupListBox"/>
+                    <TextBlock Text="Theme: ButtonRadioGroupListBox" />
                     <StackPanel Orientation="Horizontal">
                         <Border HorizontalAlignment="Left" Theme="{StaticResource RadioButtonGroupBorder}">
                             <ListBox Theme="{DynamicResource ButtonRadioGroupListBox}">
@@ -93,7 +93,7 @@
                         </Border>
                     </StackPanel>
 
-                    <TextBlock Text="Theme: CardRadioGroupListBox"/>
+                    <TextBlock Text="Theme: CardRadioGroupListBox" />
                     <ListBox Theme="{DynamicResource CardRadioGroupListBox}"
                              ItemsSource="{Binding $parent[local:ListBoxDemo].Items}" />
                     <ListBox Theme="{DynamicResource CardRadioGroupListBox}" IsEnabled="False">
@@ -101,7 +101,7 @@
                         <ListBoxItem>WPF</ListBoxItem>
                     </ListBox>
 
-                    <TextBlock Text="Theme: PureCardRadioGroupListBox"/>
+                    <TextBlock Text="Theme: PureCardRadioGroupListBox" />
                     <ListBox Theme="{DynamicResource PureCardRadioGroupListBox}"
                              ItemsSource="{Binding $parent[local:ListBoxDemo].Items}" />
                     <ListBox Theme="{DynamicResource PureCardRadioGroupListBox}" IsEnabled="False">
@@ -117,7 +117,7 @@
                 Header="CheckGroupListBox">
                 <ScrollViewer>
                     <StackPanel Spacing="20">
-                        <TextBlock Text="Theme: CheckGroupListBox"/>
+                        <TextBlock Text="Theme: CheckGroupListBox" />
                         <ListBox
                             SelectionMode="Multiple,Toggle"
                             Theme="{DynamicResource CheckGroupListBox}"
@@ -129,7 +129,7 @@
                             <ListBoxItem>WPF</ListBoxItem>
                         </ListBox>
 
-                        <TextBlock Text="Theme: CardCheckGroupListBox"/>
+                        <TextBlock Text="Theme: CardCheckGroupListBox" />
                         <ListBox
                             SelectionMode="Multiple,Toggle"
                             Theme="{DynamicResource CardCheckGroupListBox}"

demo/Semi.Avalonia.Demo/Pages/MenuDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -11,8 +9,4 @@ public partial class MenuDemo : UserControl
         InitializeComponent();
     }
 
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/NumericUpDownDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -11,8 +9,4 @@ public partial class NumericUpDownDemo : UserControl
         InitializeComponent();
     }
 
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/Overview.axaml.cs

@@ -1,5 +1,4 @@
 using Avalonia.Controls;
-using Avalonia.Media;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/PathIconDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
+using Avalonia.Controls;
-using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/ProgressBarDemo.axaml

@@ -20,7 +20,7 @@
                     Minimum="{Binding #slider.Minimum}"
                     Theme="{DynamicResource ProgressRing}"
                     Value="{Binding #slider.Value}"
-                    ShowProgressText="True"/>
+                    ShowProgressText="True" />
                 <ProgressBar
                     Width="100"
                     Height="100"
@@ -29,7 +29,7 @@
                     Maximum="{Binding #slider.Maximum}"
                     Minimum="{Binding #slider.Minimum}"
                     Theme="{DynamicResource ProgressRing}"
-                    ShowProgressText="True"/>
+                    ShowProgressText="True" />
             </StackPanel>
             <Slider
                 Name="slider"

demo/Semi.Avalonia.Demo/Pages/ProgressBarDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class ProgressBarDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/RadioButtonDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/RepeatButtonDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/ScrollViewerDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class ScrollViewerDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/SelectableTextBlock.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -11,8 +9,4 @@ public partial class SelectableTextBlockDemo : UserControl
         InitializeComponent();
     }
 
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/SliderDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -11,8 +9,4 @@ public partial class SliderDemo : UserControl
         InitializeComponent();
     }
 
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/SplitViewDemo.axaml

@@ -114,8 +114,7 @@
                                         Theme="{DynamicResource IconBorderlessToggleSwitch}"
                                         Content="{StaticResource SemiIconSidebar}"
                                         HorizontalAlignment="Left"
-                                        IsChecked="{Binding #SplitView.IsPaneOpen}">
+                                        IsChecked="{Binding #SplitView.IsPaneOpen}" />
-                                    </ToggleSwitch>
                                 </Grid>
                             </SplitView.Pane>
 
@@ -205,8 +204,7 @@
                                         Theme="{DynamicResource IconBorderlessToggleSwitch}"
                                         Content="{StaticResource SemiIconSidebar}"
                                         HorizontalAlignment="Left"
-                                        IsChecked="{Binding #SplitView2.IsPaneOpen}">
+                                        IsChecked="{Binding #SplitView2.IsPaneOpen}" />
-                                    </ToggleSwitch>
                                     <TextBlock
                                         Grid.Row="1"
                                         Margin="8,12"

demo/Semi.Avalonia.Demo/Pages/SplitViewDemo.axaml.cs

@@ -1,6 +1,5 @@
 using System.Collections.ObjectModel;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace Semi.Avalonia.Demo.Pages;
@@ -12,11 +11,6 @@ public partial class SplitViewDemo : UserControl
         InitializeComponent();
         this.DataContext = new SplitViewDemoViewModel();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }
 
 public class SplitViewDemoViewModel : ObservableObject

demo/Semi.Avalonia.Demo/Pages/TabControlDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 using Semi.Avalonia.Demo.ViewModels;
 
 namespace Semi.Avalonia.Demo.Pages;

demo/Semi.Avalonia.Demo/Pages/TextBlockDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/TextBoxDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 

demo/Semi.Avalonia.Demo/Pages/TimePickerDemo.axaml

@@ -17,9 +17,9 @@
         <TimePicker Classes="Large" />
         <TimePicker Classes="Small" />
         <StackPanel Orientation="Horizontal">
-            <TimePicker Classes="Large" ClockIdentifier="12HourClock"/>
+            <TimePicker Classes="Large" ClockIdentifier="12HourClock" />
-            <TimePicker ClockIdentifier="12HourClock"/>
+            <TimePicker ClockIdentifier="12HourClock" />
-            <TimePicker Classes="Small" ClockIdentifier="12HourClock"/>
+            <TimePicker Classes="Small" ClockIdentifier="12HourClock" />
         </StackPanel>
         <StackPanel Orientation="Horizontal">
             <TimePicker IsEnabled="False" />

demo/Semi.Avalonia.Demo/Pages/TimePickerDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class TimePickerDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/ToggleButtonDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class ToggleButtonDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/ToggleSwitchDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class ToggleSwitchDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/ToolTipDemo.axaml.cs

@@ -1,6 +1,4 @@
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 
 namespace Semi.Avalonia.Demo.Pages;
 
@@ -10,9 +8,4 @@ public partial class ToolTipDemo : UserControl
     {
         InitializeComponent();
     }
-
-    private void InitializeComponent()
-    {
-        AvaloniaXamlLoader.Load(this);
-    }
 }

demo/Semi.Avalonia.Demo/Pages/TreeViewDemo.axaml.cs

@@ -1,7 +1,5 @@
 using System.Collections.ObjectModel;
-using Avalonia;
 using Avalonia.Controls;
-using Avalonia.Markup.Xaml;
 using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace Semi.Avalonia.Demo.Pages;
@@ -25,13 +23,15 @@ public class TreeViewVm : ObservableObject
     {
         Items = new ObservableCollection<TreeViewItemVm>()
         {
-            new TreeViewItemVm() {Name = "Item 1", Id = "1"},
+            new TreeViewItemVm() { Name = "Item 1", Id = "1" },
-            new TreeViewItemVm() {Name = "Item 2", Id = "2"},
+            new TreeViewItemVm() { Name = "Item 2", Id = "2" },
-            new TreeViewItemVm() {Name = "Item 3", Id = "3", Items = new ObservableCollection<TreeViewItemVm>()
+            new TreeViewItemVm()
             {
-                new TreeViewItemVm() {Name = "Item 3.1", Id = "3.1"},
+                Name = "Item 3", Id = "3", Items = new ObservableCollection<TreeViewItemVm>()
-                new TreeViewItemVm() {Name = "Item 3.2", Id = "3.2"},
+                {
-                new TreeViewItemVm() {Name = "Item 3.3", Id = "3.3"},
+                    new TreeViewItemVm() { Name = "Item 3.1", Id = "3.1" },
+                    new TreeViewItemVm() { Name = "Item 3.2", Id = "3.2" },
+                    new TreeViewItemVm() { Name = "Item 3.3", Id = "3.3" },
                 },
             },
         };
@@ -50,8 +50,10 @@ public class TreeViewVm : ObservableObject
                     ThirdItem thirdItem = new ThirdItem { Id = k, Name = $"ThirdItem {k}" };
                     secondItem.ThirdItemItems.Add(thirdItem);
                 }
+
                 firstItem.SecondItems.Add(secondItem);
             }
+
             MultipleLevelItems.Add(firstItem);
         }
     }
@@ -69,18 +71,17 @@ public class ItemBase
     public int Id { get; set; }
     public string? Name { get; set; }
 }
+
 public class FirstItem : ItemBase
 {
     public ObservableCollection<SecondItem>? SecondItems { get; set; }
 }
+
 public class SecondItem : ItemBase
 {
     public ObservableCollection<ThirdItem>? ThirdItemItems { get; set; }
-
 }
+
 public class ThirdItem : ItemBase
 {
 }
-
-
-

demo/Semi.Avalonia.Demo/ViewModels/ApplicationViewModel.cs

@@ -2,11 +2,10 @@ using Avalonia;
 using Avalonia.Controls.ApplicationLifetimes;
 using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
-using Semi.Avalonia.Demo.Views;
 
 namespace Semi.Avalonia.Demo.ViewModels;
 
-public partial class ApplicationViewModel: ObservableObject
+public partial class ApplicationViewModel : ObservableObject
 {
     [RelayCommand]
     private void Exit()

demo/Semi.Avalonia.Demo/ViewModels/TreeDataGridDemo/TreeDataGridDemoViewModel.cs

@@ -2,7 +2,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 
 namespace Semi.Avalonia.Demo.ViewModels;
 
-public class TreeDataGridDemoViewModel: ObservableObject
+public class TreeDataGridDemoViewModel : ObservableObject
 {
     public SongsPageViewModel SongsContext { get; } = new();
     public FilesPageViewModel FilesContext { get; } = new();

demo/Semi.Avalonia.Demo/Views/MainWindow.axaml.cs

@@ -1,5 +1,4 @@
 using Avalonia.Controls;
-using Avalonia.Controls.Notifications;
 
 namespace Semi.Avalonia.Demo.Views;