<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="678" Loaded="Window_Loaded">
    <Grid>
        <StackPanel Orientation="Vertical">
            <Expander>
                <StackPanel Orientation="Vertical">
                    <TextBox />
                    <TextBlock />
                    <Button />
                </StackPanel>
            </Expander>

            <Grid Name="grid1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="130"></ColumnDefinition>
                    <ColumnDefinition Width="380"></ColumnDefinition>
                    <ColumnDefinition Width="146"></ColumnDefinition>
                </Grid.ColumnDefinitions>

                <Grid.RowDefinitions>
                    <RowDefinition Height="30"></RowDefinition>
                    <RowDefinition Height="*"></RowDefinition>
                </Grid.RowDefinitions>

                <TextBlock Text="File Name"  Grid.Row="0" Grid.Column="0" Margin="5" />
                <TextBlock Text="File Path"  Grid.Row="0" Grid.Column="1" Margin="5" />
                <TextBlock Text="File Size" Grid.Row="0" Grid.Column="2" Margin="5" />

                <ListBox Name="listbox_name" Grid.Row="1" Grid.Column="0" BorderBrush="Black" />
                <ListBox Name="listbox_path" Grid.Row="1" Grid.Column="1" BorderBrush="Black" />
                <ListBox Name="listbox_size" Grid.Row="1" Grid.Column="2" BorderBrush="Black" />
            </Grid>
        </StackPanel>
    </Grid>
</Window>