School/SchoolProject/ShowEmployeePage.xaml

<Page x:Class="SchoolProject.ShowEmployeePage"
      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:SchoolProject"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="Сотрудники" Style="{StaticResource MainPage}">

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="40"/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
            <Button x:Name="BtnAddEmployee" Click="BtnAddEmployee_Click" Margin="0,0,20,0">Добавить сотрудника</Button>
        </StackPanel>
        <DataGrid Grid.Row="1" x:Name="EmployeeList" ColumnWidth ="*" Margin="5" KeyUp="EmployeeList_KeyUp">
            <DataGrid.Columns>
                <DataGridTextColumn Header="ФИО" Binding="{Binding FullName}"></DataGridTextColumn>
                <DataGridTextColumn Header="Возраст" Binding="{Binding Age}"></DataGridTextColumn>
                <DataGridTextColumn Header="Должность" Binding="{Binding Position.PositionName}"></DataGridTextColumn>
                <DataGridTextColumn Header="Подразделение" Binding="{Binding Subdivision.SubdivisionName}"></DataGridTextColumn>
                <DataGridTextColumn Header="Статус" Binding="{Binding IsWorkingString}"></DataGridTextColumn>
                <DataGridTemplateColumn>
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <Button x:Name="BtnEditEmployee" Click="BtnEditEmployee_Click">Изменить сотрудника</Button>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Page>