CourseProject_ended/Hotel_Course_Project/HostelsPage.xaml

<Page x:Class="Hotel_Course_Project.HostelsPage"
      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="HostelsPage">

        <Grid>        
            <Grid.RowDefinitions>
                <RowDefinition Height="40"></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="100"></ColumnDefinition>
                <ColumnDefinition></ColumnDefinition>
            </Grid.ColumnDefinitions>

            <Button x:Name="AddOrderBtn" Click="AddOrderBtn_Click">Добавить</Button>

            <StackPanel Grid.Column="2" Orientation="Horizontal">
                <TextBlock VerticalAlignment="Center">Поиск</TextBlock>
                <TextBox  Name="StaffSeacrhTB" TextChanged="StaffSeacrhTB_TextChanged" VerticalAlignment="Center" Width="100"></TextBox>
                <Button Name="StaffSrchBtn" Click="StaffSrchBtn_Click">Поиск</Button>
            </StackPanel>
        <DataGrid Grid.Row="1" Grid.ColumnSpan="2" x:Name="PayList" AutoGenerateColumns="False" ColumnWidth="*" IsReadOnly="True">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Дата" Binding="{Binding Pay.PayDate}"></DataGridTextColumn>
                <DataGridTextColumn Header="Номер" Binding="{Binding Room.NumRoom}"></DataGridTextColumn>
                <DataGridTemplateColumn Header="Хостес">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="{Binding Staff.LName}"></TextBlock>
                                <TextBlock Text=" "></TextBlock>
                                <TextBlock Text="{Binding Staff.FName[0]}"></TextBlock>
                                <TextBlock Text="."></TextBlock>
                                <TextBlock Text="{Binding Staff.MName[0]}"></TextBlock>
                                <TextBlock Text="."></TextBlock>
                            </StackPanel>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTemplateColumn Header="Клиент">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="{Binding Client.LName}"></TextBlock>
                                <TextBlock Text=" "></TextBlock>
                                <TextBlock Text="{Binding Client.FName[0]}"></TextBlock>
                                <TextBlock Text="."></TextBlock>
                                <TextBlock Text="{Binding Client.MName[0]}"></TextBlock>
                                <TextBlock Text="."></TextBlock>
                            </StackPanel>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTextColumn Header="Стоимость" Binding="{Binding Pay.EndSum}"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Page>