Semi.Avalonia/demo/Semi.Avalonia.TreeDataGrid.Demo/MainWindow.axaml

<Window
    x:Class="Semi.Avalonia.TreeDataGrid.Demo.MainWindow"
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:converters="clr-namespace:Semi.Avalonia.TreeDataGrid.Demo.Converters"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:vm="clr-namespace:Semi.Avalonia.TreeDataGrid.Demo.ViewModels;assembly=Semi.Avalonia.TreeDataGrid.Demo"
    Title="Semi.Avalonia.TreeDataGrid.Demo"
    d:DesignHeight="450"
    d:DesignWidth="800"
    x:DataType="vm:MainViewModel"
    mc:Ignorable="d">
    <Window.Resources>
        <converters:FileIconConverter x:Key="FileIconConverter">
            <PathGeometry x:Key="file">M14,2H6A2,2 0 0,0 4,4V20A2,2 0 0,0 6,22H18A2,2 0 0,0 20,20V8L14,2M18,20H6V4H13V9H18V20Z</PathGeometry>
            <PathGeometry x:Key="folderOpen">M6.1,10L4,18V8H21A2,2 0 0,0 19,6H12L10,4H4A2,2 0 0,0 2,6V18A2,2 0 0,0 4,20H19C19.9,20 20.7,19.4 20.9,18.5L23.2,10H6.1M19,18H6L7.6,12H20.6L19,18Z</PathGeometry>
            <PathGeometry x:Key="folderClosed">M20,18H4V8H20M20,6H12L10,4H4C2.89,4 2,4.89 2,6V18A2,2 0 0,0 4,20H20A2,2 0 0,0 22,18V8C22,6.89 21.1,6 20,6Z</PathGeometry>
        </converters:FileIconConverter>
    </Window.Resources>
    <Grid RowDefinitions="Auto, *">
        <Button
            HorizontalAlignment="Right"
            Click="Button_OnClick"
            Content="Theme" />
        <TabControl Grid.Row="1">
            <TabItem Header="Songs">
                <TreeDataGrid
                    AutoDragDropRows="True"
                    DataContext="{Binding SongsContext}"
                    Source="{Binding Songs}">
                    <TreeDataGrid.Resources>
                        <DataTemplate x:Key="AlbumCell" DataType="vm:SongViewModel">
                            <TextBlock
                                HorizontalAlignment="Stretch"
                                VerticalAlignment="Center"
                                Background="Transparent"
                                Text="{Binding Album}" />
                        </DataTemplate>
                        <DataTemplate x:Key="AlbumEditCell" DataType="vm:SongViewModel">
                            <ComboBox
                                VerticalAlignment="Center"
                                Classes="Small"
                                ItemsSource="{x:Static vm:Song.Albums}"
                                SelectedItem="{Binding Album}" />
                        </DataTemplate>
                        <DataTemplate x:Key="CommentsCell" DataType="vm:SongViewModel">
                            <TextBlock VerticalAlignment="Center" Text="{Binding CountOfComment}" />
                        </DataTemplate>
                        <DataTemplate x:Key="CommentsEditCell" DataType="vm:SongViewModel">
                            <NumericUpDown
                                Width="100"
                                HorizontalAlignment="Left"
                                VerticalAlignment="Center"
                                Classes="Small"
                                Value="{Binding CountOfComment}" />
                        </DataTemplate>
                    </TreeDataGrid.Resources>
                    <TreeDataGrid.Styles>
                        <Style Selector="TreeDataGrid TreeDataGridRow:nth-last-child(2n)">
                            <Setter Property="Background" Value="#20808080" />
                        </Style>
                    </TreeDataGrid.Styles>
                </TreeDataGrid>
            </TabItem>
            <TabItem Header="Files">
                <Grid DataContext="{Binding FilesContext}" RowDefinitions="Auto, *">
                    <DockPanel Margin="0,4" DockPanel.Dock="Top">
                        <ComboBox
                            DockPanel.Dock="Left"
                            ItemsSource="{Binding Drives}"
                            SelectedItem="{Binding SelectedDrive}" />
                        <TextBox
                            Margin="4,0,0,0"
                            VerticalContentAlignment="Center"
                            KeyDown="SelectedPath_KeyDown"
                            Text="{Binding SelectedPath, Mode=OneWay}" />
                    </DockPanel>
                    <TreeDataGrid
                        Name="fileViewer"
                        Grid.Row="1"
                        Source="{Binding Source}">
                        <TreeDataGrid.Resources>

                            <!--  Template for Name column cells  -->
                            <DataTemplate x:Key="FileNameCell" DataType="vm:FileNodeViewModel">
                                <StackPanel Orientation="Horizontal">
                                    <PathIcon
                                        Width="16"
                                        Height="16"
                                        Margin="8,0"
                                        VerticalAlignment="Center">
                                        <PathIcon.Data>
                                            <MultiBinding Converter="{StaticResource FileIconConverter}">
                                                <Binding Path="IsDirectory" />
                                                <Binding Path="IsExpanded" />
                                            </MultiBinding>
                                        </PathIcon.Data>
                                    </PathIcon>
                                    <TextBlock VerticalAlignment="Center" Text="{Binding Name}" />
                                </StackPanel>
                            </DataTemplate>

                            <!--  Edit template for Name column cells  -->
                            <DataTemplate x:Key="FileNameEditCell" DataType="vm:FileNodeViewModel">
                                <StackPanel Orientation="Horizontal">
                                    <Image Margin="0,0,4,0" VerticalAlignment="Center">
                                        <Image.Source>
                                            <MultiBinding Converter="{StaticResource FileIconConverter}">
                                                <Binding Path="IsDirectory" />
                                                <Binding Path="IsExpanded" />
                                            </MultiBinding>
                                        </Image.Source>
                                    </Image>
                                    <TextBox
                                        VerticalAlignment="Center"
                                        Classes="Small"
                                        Text="{Binding Name}">
                                        <TextBox.Styles>
                                            <Style Selector="DataValidationErrors">
                                                <Setter Property="Theme" Value="{DynamicResource TooltipDataValidationErrors}" />
                                            </Style>
                                        </TextBox.Styles>
                                    </TextBox>
                                </StackPanel>
                            </DataTemplate>
                        </TreeDataGrid.Resources>
                        <TreeDataGrid.Styles>
                            <Style Selector="TreeDataGrid TreeDataGridRow:nth-child(2n)">
                                <Setter Property="Background" Value="#20808080" />
                            </Style>
                        </TreeDataGrid.Styles>
                    </TreeDataGrid>
                </Grid>
            </TabItem>
        </TabControl>
    </Grid>
</Window>