CourseProject_ended/Hotel_Course_Project/OrderChangeOrAddPage.xaml

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

    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition> </RowDefinition>
        </Grid.RowDefinitions>
    </Grid>
</Page>