Choto/AvaloniaApplication3/MainWindow.axaml

<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="AvaloniaApplication3.MainWindow"
        x:CompileBindings="False"
        Title="Demra_Glavnoe">
    <DockPanel>
        <StackPanel Orientation="Horizontal">
            <Button Content="Registr" Click="OnRegistrButtonClick"/>
        </StackPanel>
        <ListBox x:Name="ItemListBox">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel>
                        <TextBox Text="{Binding numero}"/>
                        <TextBox Text="{Binding act}"/>
                        <TextBox Text="{Binding date}"/>
                        <TextBox Text="{Binding day}"/>
                        <TextBox Text="{Binding city}"/>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </DockPanel>
</Window>