fix: fix #53.

demo/Ursa.Demo/Pages/IPv4BoxDemo.axaml

@@ -4,14 +4,13 @@
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    xmlns:pages="clr-namespace:Ursa.Demo.Pages"
     xmlns:u="https://irihi.tech/ursa"
+    xmlns:vm="clr-namespace:Ursa.Demo.ViewModels;assembly=Ursa.Demo"
+    x:DataType="vm:IPv4BoxDemoViewModel"
+    x:CompileBindings="True"
     d:DesignHeight="450"
     d:DesignWidth="800"
     mc:Ignorable="d">
-    <Design.DataContext>
-        <pages:IPv4DemoViewMode />
-    </Design.DataContext>
     <StackPanel HorizontalAlignment="Left">
         <ToggleButton
             Name="format"
@@ -38,6 +37,6 @@
             IPAddress="{Binding Address}"
             ShowLeadingZero="{Binding #format.IsChecked}" />
         <TextBlock Classes="" Text="Disabled" />
-        <u:IPv4Box Width="200" IsEnabled="False" />
+        <u:IPv4Box Width="200" IsEnabled="False" IPAddress="{Binding Address}" />
     </StackPanel>
 </UserControl>

demo/Ursa.Demo/Pages/IPv4BoxDemo.axaml.cs

@@ -12,18 +12,5 @@ public partial class IPv4BoxDemo : UserControl
     public IPv4BoxDemo()
     {
         InitializeComponent();
-        DataContext = new IPv4DemoViewMode();
-    }
-}
-
-public partial class IPv4DemoViewMode: ObservableObject
-{
-    [ObservableProperty]
-    private IPAddress? _address;
-
-    public void ChangeAddress()
-    {
-        long l = Random.Shared.NextInt64(0x00000000FFFFFFFF);
-        Address = new IPAddress(l);
     }
 }

demo/Ursa.Demo/Pages/ImageViewerDemo.axaml

@@ -13,6 +13,10 @@
         <SolidColorBrush x:Key="MaskBorder" Color="Red" />
     </UserControl.Resources>
     <StackPanel>
+        <u:Banner
+            Content="Setting the Scale before loading has no effect."
+            Header="Notice"
+            Type="Warning" />
         <u:ImageViewer
             Name="viewer"
             Width="600"

demo/Ursa.Demo/ViewModels/IPv4BoxDemoViewModel.cs

@@ -1,6 +1,20 @@
+using System;
+using System.Net;
+using CommunityToolkit.Mvvm.ComponentModel;
+
 namespace Ursa.Demo.ViewModels;
 
-public class IPv4BoxDemoViewModel: ViewModelBase
+public partial class IPv4BoxDemoViewModel: ObservableObject
 {
+    [ObservableProperty] private IPAddress? _address;
     
+    public IPv4BoxDemoViewModel()
+    {
+        Address = IPAddress.Parse("192.168.1.1");
+    }
+    public void ChangeAddress()
+    {
+        long l = Random.Shared.NextInt64(0x00000000FFFFFFFF);
+        Address = new IPAddress(l);
+    }
 }