Вывод картинки и уведомления

AvaloniaTest/App.axaml

@@ -1,10 +1,14 @@
 <Application xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:avalonia="using:Material.Icons.Avalonia"
+             xmlns:semi="https://irihi.tech/semi"
              x:Class="AvaloniaTest.App"
              RequestedThemeVariant="Default">
              <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
 
     <Application.Styles>
-        <FluentTheme />
+        <semi:SemiTheme/>
+        <semi:SemiPopupAnimations/>
+        <avalonia:MaterialIconStyles/>
     </Application.Styles>
 </Application>

AvaloniaTest/AvaloniaTest.csproj

@@ -15,5 +15,12 @@
       <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
       <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="Material.Icons.Avalonia" Version="3.0.2" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.11">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.3" />
+    <PackageReference Include="Semi.Avalonia" Version="12.1.0.1" />
   </ItemGroup>
 </Project>

AvaloniaTest/MainView.axaml

@@ -0,0 +1,16 @@
+<NavigationPage xmlns="https://github.com/avaloniaui"
+                xmlns:avalonia="using:Material.Icons.Avalonia"
+                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"
+                mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+                x:Class="AvaloniaTest.MainView">
+    <ContentPage Header="Welcome">
+        <StackPanel>
+        <Button Click="Button_Click">
+            <avalonia:MaterialIcon Kind="File"/>
+        </Button>
+            <Image Width="300" Height="200" Stretch="Uniform" Name="Image1"/>
+            </StackPanel>
+    </ContentPage>
+</NavigationPage>

AvaloniaTest/MainView.axaml.cs

@@ -0,0 +1,89 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Notifications;
+using Avalonia.Markup.Xaml;
+using Avalonia.Media.Imaging;
+using Avalonia.Platform.Storage;
+using System;
+using System.IO;
+using System.Threading.Tasks;
+
+namespace AvaloniaTest
+{
+    public partial class MainView : NavigationPage
+    {
+        public static MainView Current { get; private set; } = null!;
+
+        private WindowNotificationManager notificationManager = null!;
+
+        public MainView()
+        {
+            InitializeComponent();
+            Current = this;
+        }
+
+        protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
+        {
+            base.OnAttachedToVisualTree(e);
+            notificationManager = new WindowNotificationManager(TopLevel.GetTopLevel(this));
+        }
+
+        /// <summary>
+        /// Показывает уведомление с заданным заголовком, сообщением и типом уведомления.
+        /// </summary>
+        /// <param name="title">Заголовок</param>
+        /// <param name="message">Содержимое</param>
+        /// <param name="type">Тип уведомления</param>
+        public void ShowNotification(string title, string message, NotificationType type)
+        {
+            notificationManager.Show(new Notification
+            {
+                Message = message,
+                Expiration = TimeSpan.FromSeconds(3),
+                Type = type,
+                Title = title
+            });
+        }
+
+        /// <summary>
+        /// Обработчик события нажатия кнопки для выбора изображения и его отображения в Image1.
+        /// </summary>
+        /// <param name="sender">Отправитель</param>
+        /// <param name="e">Аргументы</param>
+        private async void Button_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+        {
+            try
+            {
+                var top = TopLevel.GetTopLevel(this);
+                var result = await top!.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
+                {
+                    AllowMultiple = false,
+                    FileTypeFilter = [FilePickerFileTypes.ImageAll],
+                    Title = "Выберите изображение"
+                });
+
+                if (result.Count == 0)
+                    return;
+
+                var imagePath = result[0].Path.LocalPath;
+
+                string newImageName = $"{Guid.NewGuid()}{Path.GetExtension(imagePath)}";
+
+                string newImagePath = Path.Combine("Images", newImageName);
+
+                Directory.CreateDirectory("Images");
+
+                File.Copy(imagePath, newImagePath);
+
+                Image1.Source = new Bitmap(newImagePath);
+
+                MainView.Current.ShowNotification("Успех", "Изображение успешно загружено и сохранено.", NotificationType.Success);
+            }
+            catch (Exception ex)
+            {
+                MainView.Current.ShowNotification("Ошибка", $"Не удалось загрузить изображение: {ex.Message}", NotificationType.Error);
+            }
+
+        }
+    }
+}

AvaloniaTest/MainWindow.axaml

@@ -1,9 +1,11 @@
 <Window xmlns="https://github.com/avaloniaui"
+        xmlns:avalonia="using:Material.Icons.Avalonia"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:local="using:AvaloniaTest"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         x:Class="AvaloniaTest.MainWindow"
         Title="AvaloniaTest">
-    Welcome to Avalonia!
+	<local:MainView/>
 </Window>

AvaloniaTest/MainWindow.axaml.cs

@@ -8,4 +8,9 @@ public partial class MainWindow : Window
     {
         InitializeComponent();
     }
+
+    private void Button_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+
+    }
 }