demo_hard/FunctionWindow.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="demo_hard.FunctionWindow"
        x:CompileBindings="False"
        Title="FunctionWindow">
    <DockPanel>
        <StackPanel DockPanel.Dock="Top" HorizontalAlignment="Center" Orientation="Horizontal" >
            <StackPanel>
            <Image Source="{Binding Image}" Width="100" Height="100" Margin="5" HorizontalAlignment="Center"/>
            </StackPanel>
            <StackPanel>
                <TextBlock x:Name="Fio">
                    <Run Text="ФИО:"/>
                    <Run Text="{Binding Fio}"/>
                </TextBlock>
                <TextBlock>
                    <Run Text="Роль:"/>
                    <Run Text="{Binding RoleId}"/>
                </TextBlock>
            </StackPanel>
            <Button Content="Назад" Click="Back_Button"/>
            <Button Content="Далее" Click="Next_Function_Button"/>
        </StackPanel>
    </DockPanel>
</Window>