Cafe/Cafe2/ElementsWindows/ExchangeWindow.xaml

<Window x:Class="Cafe.ElementsWindows.ExchangeWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Cafe.ElementsWindows"
        mc:Ignorable="d"
        Title="Смена" Height="900" Width="1600" WindowStartupLocation="CenterScreen" ResizeMode="CanMinimize">
    <Grid Margin="0,0,0,0">
        <Button x:Name="BackButton" Content="Назад" HorizontalAlignment="Left" Margin="20,17,0,0" VerticalAlignment="Top" Height="39" Width="140" FontSize="25" Click="BackButtonClick"/>
        <TabControl BorderThickness="0" Margin="0,78,0,0">
            <TabItem Header="Заказы" Height="20" Width="100" Background="#FF4F5856">
                <Grid Margin="-3,-22,-3,-2">
                    <DataGrid x:Name="OrdersList" AutoGenerateColumns="False" Height="600" Margin="0,158,0,0" VerticalAlignment="Top" HorizontalAlignment="Center" Width="1340"
                        RowHeaderStyle="{StaticResource RowHeaderStyle}" ColumnHeaderStyle="{StaticResource ColumnHeaderStyle}">
                        <DataGrid.ItemContainerStyle>
                            <Style TargetType="{x:Type DataGridRow}">
                                <EventSetter Event="Control.MouseDoubleClick" Handler="OrdersListMouseDoubleClick"/>
                            </Style>
                        </DataGrid.ItemContainerStyle>
                        <DataGrid.Columns>
                            <DataGridTextColumn Binding="{Binding IDTable}" Header="Столик" Width="330" IsReadOnly="True"/>
                            <DataGridTextColumn Binding="{Binding EmployeeExchanges.Users.SecondName}" Header="Официант" Width="330" IsReadOnly="True"/>
                            <DataGridTextColumn Binding="{Binding Time}" Header="Время" Width="330" IsReadOnly="True"/>
                            <DataGridTextColumn Binding="{Binding SumOfOrder}" Header="Сумма" Width="330" IsReadOnly="True"/>
                        </DataGrid.Columns>
                    </DataGrid>
                    <TextBox x:Name="OrdersListSearch" HorizontalAlignment="Center" Margin="0,99,0,0" TextWrapping="Wrap" Text="Поиск" VerticalAlignment="Top" Width="1340" Height="30" FontSize="20" 
                        Foreground="#FF675B5B" PreviewMouseLeftButtonUp="OrdersListSearchPreviewMouseLeftButtonUp" LostFocus="OrdersListSearchLostFocus" TextChanged="OrdersListSearchTextChanged"/>
                </Grid>
            </TabItem>
            <TabItem Header="Работники" Height="20" Width="100" Background="#FF4F5856">
                <Grid Margin="-3,-22,-3,-2">
                    <DataGrid x:Name="EmployeesList" AutoGenerateColumns="False" Height="600" Margin="0,158,0,0" VerticalAlignment="Top" HorizontalAlignment="Center" Width="1340"
                        RowHeaderStyle="{StaticResource RowHeaderStyle}" ColumnHeaderStyle="{StaticResource ColumnHeaderStyle}">
                        <DataGrid.ItemContainerStyle>
                            <Style TargetType="{x:Type DataGridRow}">
                                <EventSetter Event="Control.MouseDoubleClick" Handler="EmployeesListMouseDoubleClick"/>
                            </Style>
                        </DataGrid.ItemContainerStyle>
                        <DataGrid.Columns>
                            <DataGridTextColumn Binding="{Binding Users.SecondName}" Header="Фамлия" Width="330" IsReadOnly="True"/>
                            <DataGridTextColumn Binding="{Binding Users.FirstName}" Header="Имя" Width="330" IsReadOnly="True"/>
                            <DataGridTextColumn Binding="{Binding Users.MiddleName}" Header="Отчество" Width="330" IsReadOnly="True"/>
                            <DataGridTextColumn Binding="{Binding Users.Roles.RoleName}" Header="Должность" Width="330" IsReadOnly="True"/>
                        </DataGrid.Columns>
                    </DataGrid>
                    <TextBox x:Name="EmployeesListSearch" HorizontalAlignment="Center" Margin="0,99,0,0" TextWrapping="Wrap" Text="Поиск" VerticalAlignment="Top" Width="1340" Height="30" FontSize="20" 
                        Foreground="#FF675B5B" PreviewMouseLeftButtonUp="EmployeesListSearchPreviewMouseLeftButtonUp" LostFocus="EmployeesListSearchLostFocus" TextChanged="EmployeesListSearchTextChanged"/>
                </Grid>
            </TabItem>
        </TabControl>
    </Grid>
</Window>