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readme.md

Avalonia

Структура и пространства имен AXAML

создаваемый по умолчанию в проекте файл MainWindow.axaml будет иметь следующую разметку:

<Window 
    xmlns="https://github.com/avaloniaui"
    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="AvaloniaFirst.MainWindow"
    Title="AvaloniaFirst"
>
    Welcome to Avalonia!
</Window>

Элементы и их атрибуты

добавим кнопку в создаваемую по умолчанию разметку окна:

<Window xmlns="https://github.com/avaloniaui"
        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="AvaloniaApplication1.MainWindow"
        Title="AvaloniaApplication1">
        <Button 
                x:Name="button1" Width="100" Height="30" Content="Кнопка" />
</Window>

Специальные символы

<Button 
    Content="&lt;&quot;Hello&quot;&gt;" 
/>


<Window 
    xmlns="https://github.com/avaloniaui"
    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="AvaloniaApplication1.MainWindow"
    Title="AvaloniaApplication1">
    <Button
        xml:space="preserve"> Hello          World
</Button>
</Window>

Взаимодействие кода C# и XAML

<Window xmlns="https://github.com/avaloniaui"
        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:local="clr-namespace:AvaloniaApplication1"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="AvaloniaApplication1.MainWindow"
        Title="AvaloniaApplication1">
    <Grid>
        <TextBox 
            x:Name="textBox1" 
            Width="150" 
            Height="30" 
            VerticalAlignment="Top" 
            Margin="20" />
        <Button 
            x:Name="button1"  
            Width="100" 
            Height="30" 
            Content="Кнопка" 
            Click="Button_Click" />
    </Grid>
</Window>

using Avalonia.Controls; 
using Avalonia.Interactivity;

namespace AvaloniaApplication1;

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private void Button_Click(
        object? sender, 
        RoutedEventArgs e)
    {
        string text = textBox1.Text;
        if (text != "")
        {
           var messageWindow = new Window()
        {
            Title = "Message",
            Content = new TextBlock() { Text = text }
        };
        messageWindow.ShowDialog(this);
        }
    }
}

Пространства имен из C# в XAML

using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using AvaloniaApplication1;

namespace AvaloniaApplication1
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void InitializeComponent()
        {
            AvaloniaXamlLoader.Load(this);
            Button phoneButton = this.FindControl<Button>("phoneButton");
            phoneButton.Click += PhoneButton_Click;
        }

        private void PhoneButton_Click(object sender, RoutedEventArgs e)
        {
            string text = "Смартфон Lumia 950; цена: 700";
            
            var messageWindow = new Window()
            {
                Title = "Message",
                Content = new TextBlock() { Text = text }
            };
            messageWindow.ShowDialog(this);
        }
    }
}

<Window xmlns="https://github.com/avaloniaui"
        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:local="clr-namespace:AvaloniaApplication1;assembly=AvaloniaApplication1"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="AvaloniaApplication1.MainWindow"
        Title="AvaloniaApplication1">
    <Button x:Name = "phoneButton" Width="250" Height="40">
        <StackPanel Orientation="Horizontal">
            <TextBlock Text="Lumia 950" Margin="5"/>
            <TextBlock Text="$700" Margin="5"/>
        </StackPanel>
    </Button>
</Window>

Компоновка

<Window xmlns="https://github.com/avaloniaui"
        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="AvaloniaApplication1.MainWindow"
        Title="AvaloniaApplication1">
        <Grid ShowGridLines="True">
                <Grid.RowDefinitions>
                        <RowDefinition />
                        <RowDefinition />
                        <RowDefinition />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                        <ColumnDefinition />
                        <ColumnDefinition />
                        <ColumnDefinition />
                </Grid.ColumnDefinitions>
        </Grid>
</Window>


<Grid ShowGridLines="True">
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition />
        <RowDefinition />
    </Grid.RowDefinitions>
    <Grid.ColumnDefinitions>
        <ColumnDefinition />
        <ColumnDefinition />
        <ColumnDefinition />
    </Grid.ColumnDefinitions>
    <Button 
        Content="Строка 0 Столбец 0"  />
    <Button 
        Grid.Column="0" 
        Grid.Row="1" 
        Content="Объединение трех столбцов" 
        Grid.ColumnSpan="3"  />
    <Button 
        Grid.Column="2" 
        Grid.Row="2" 
        Content="Строка 2 Столбец 2"  />
</Grid>

Установка размеров

                <Grid.RowDefinitions>
                        <RowDefinition />
                        <RowDefinition />
                        <RowDefinition />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="0.5*" />
                        <ColumnDefinition Width="1.5*" />
                </Grid.ColumnDefinitions>
                <Button 
                        Content="Строка 0 Столбец 0"  />
                <Button 
                        Grid.Column="0" 
                        Grid.Row="1" 
                        Content="Объединение трех столбцов" 
                        Grid.ColumnSpan="3"  />
                <Button 
                        Grid.Column="2" 
                        Grid.Row="2" 
                        Content="Строка 2 Столбец 2"  />
        
        </Grid>

GridSplitter

<Grid>
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="*" />
        <ColumnDefinition Width="Auto" />
        <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    <Button 
        Grid.Column="0" 
        Content="Левая кнопка" />
    <GridSplitter
        Grid.Column="1" 
        Width="3" />
    <Button 
        Grid.Column="2" 
        Content="Правая кнопка" />
</Grid>

StackPanel

<Grid>
    <StackPanel>
        <Button 
            Background="Blue" 
            Content="1" />
        <Button 
            Background="White" 
            Content="2" />
        <Button 
            Background="Red" 
            Content="3" />
    </StackPanel>
</Grid>


<StackPanel Orientation="Horizontal">
    <Button 
        Background="Blue" 
        MinWidth="30" 
        Content="1" />
    <Button 
        Background="White" 
        MinWidth="30" 
        Content="2" />
    <Button 
        Background="Red" 
        MinWidth="30" 
        Content="3" />
</StackPanel>

WrapPanel

<WrapPanel>
    <Button 
        Background="AliceBlue" 
        Content="Кнопка 1" />
    <Button 
        Background="Blue" 
        Content="Кнопка 2" />
    <Button 
        Background="Aquamarine" 
        Content="Кнопка 3" 
        Height="30"/>
    <Button 
        Background="DarkGreen" 
        Content="Кнопка 4" 
        Height="20"/>
    <Button 
        Background="LightGreen" 
        Content="Кнопка 5"/>
    <Button 
        Background="RosyBrown" 
        Content="Кнопка 6" 
        Width="80" />
    <Button 
        Background="GhostWhite" 
        Content="Кнопка 7" />
</WrapPanel>

Вертикальный WrapPanel

<WrapPanel Orientation="Vertical">
    <Button 
        Background="AliceBlue" 
        Content="Кнопка 1" 
        Height="50" />
    <Button 
        Background="Blue" 
        Content="Кнопка 2" />
    <Button 
        Background="Aquamarine" 
        Content="Кнопка 3" 
        Width="60"/>
    <Button 
        Background="DarkGreen" 
        Content="Кнопка 4" 
        Width="80"/>
    <Button 
        Background="LightGreen" 
        Content="Кнопка 5"/>
    <Button 
        Background="RosyBrown" 
        Content="Кнопка 6" 
        Height="80" />
    <Button 
        Background="GhostWhite" 
        Content="Кнопка 7" />
    <Button 
        Background="Bisque" 
        Content="Кнопка 8" />
</WrapPanel>

установить определенную ширину для всех вложенных элементов

<WrapPanel 
    ItemHeight="30" 
    ItemWidth="80" 
    Orientation="Horizontal"
>
    <Button 
        Background="AliceBlue" 
        Content="1" />
    <Button 
        Background="Blue" 
        Content="2" />
    <Button 
        Background="Aquamarine" 
        Content="3"/>
    <Button 
        Background="DarkGreen" 
        Content="4"/>
    <Button 
        Background="LightGreen" 
        Content="5"/>
    <Button 
        Background="AliceBlue" 
        Content="6"  />
    <Button 
        Background="Blue" 
        Content="7" />
</WrapPanel>

Image. Ресурсы

<Grid ShowGridLines="True">
                <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="100"/>
                        <ColumnDefinition/>
                </Grid.ColumnDefinitions>
                <StackPanel 
                        Orientation="Vertical"
                        VerticalAlignment="Bottom" 
                >
                        <Image 
                                Source="avares://AvaloniaApplication1/images/aa.jpg"/>
                </StackPanel>
        </Grid>