demoekz/Cafe/CookPage.xaml

<Page x:Class="Cafe.CookPage"
      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:Cafe"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="CookPage">

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="170"/>
        </Grid.ColumnDefinitions>
        <DataGrid Name="OrderGrid" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Order number" Binding="{Binding OrderNumber}"></DataGridTextColumn>
                <DataGridTextColumn Header="Table number" Binding="{Binding TableNumber}"></DataGridTextColumn>
                <DataGridTextColumn Header="Client quantity" Binding="{Binding ClientQuantity}"></DataGridTextColumn>
                <DataGridTextColumn Header="Name of dish" Binding="{Binding Dish.NameOfDish}"></DataGridTextColumn>
                <DataGridTextColumn Header="Ready status" Binding="{Binding IsReady}"></DataGridTextColumn>
                <DataGridTextColumn Header="Paid status" Binding="{Binding IsPaid}"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>

        <Button Grid.Column="1" Height="35" Width="80" Name="ChangeStatusBtn" Click="ChangeStatusBtn_Click">Change status</Button>
    </Grid>
</Page>