MoskalenkoAA/ModelExam/User.xaml

<Page x:Class="ModelExam.User"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:ModelExam"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="User">
    <Page.Resources>
        <DataTemplate x:Key="allusers">
            <Border BorderBrush="Black" BorderThickness="1" Width="170">
                <StackPanel Uid="uid" Orientation="Horizontal">
                    <TextBlock Text="Фамилия: "></TextBlock>
                    <TextBlock Text="{Binding surname}"></TextBlock>
                    <TextBlock Text=" "></TextBlock>
                    <TextBlock Text="Имя: "></TextBlock>
                    <TextBlock Text="{Binding firstname}"></TextBlock>
                    <TextBlock Text=" "></TextBlock>
                    <TextBlock Text="Отчество: "></TextBlock>
                    <TextBlock Text="{Binding patronymic}"></TextBlock>
                    <StackPanel Orientation="Vertical">
                        <TextBlock Text="{Binding id_post}"></TextBlock>
                    </StackPanel>
                </StackPanel>
            </Border>
        </DataTemplate>
    </Page.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="7*"/>
            <RowDefinition Height="38*"/>
        </Grid.RowDefinitions>
        <ListBox Grid.Row="1" x:Name="lb" ItemTemplate="{StaticResource allusers}"></ListBox>
    </Grid>
</Page>