GasStation/FillingColumn/StartWorkPage.xaml

<Page x:Class="FillingColumn.StartWorkPage"
      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:FillingColumn"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="Заправочная колонка - Начало работы">

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <StackPanel Orientation="Horizontal" VerticalAlignment="Bottom" HorizontalAlignment="Center">
            <TextBlock Text="STATION_ID АЗС:" VerticalAlignment="Center"></TextBlock>
            <TextBox x:Name="TxtIDStation" Margin="5" Width="100" Height="20"></TextBox>
        </StackPanel>

        <Button x:Name="BtnConnectToStation" Content="Начать работу" VerticalAlignment="Top" Grid.Row="1" Margin="300,70,300,70" Click="BtnConnectToStation_Click"></Button>
    </Grid>
</Page>