<Grid Name="grdContacts">
        
        <DataGrid Name="contactsGrid" ItemsSource="{Binding Contacts}" Grid.Column="0" Grid.ColumnSpan="2" AutoGenerateColumns="False" CanUserAddRows="False">
            <DataGrid.Columns>
                <DataGridTemplateColumn>
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <CheckBox IsChecked="{Binding Path=IsSelected}"></CheckBox>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
                <DataGridTextColumn Binding="{Binding Path=Sex}" IsReadOnly="True" Width="1*"></DataGridTextColumn>
                <DataGridTextColumn Binding="{Binding Path=PhoneNumber}"  IsReadOnly="True" Width="3*"></DataGridTextColumn>
                <DataGridTextColumn Binding="{Binding Path=LastName}"  IsReadOnly="True" Width="3*"></DataGridTextColumn>
                <DataGridTextColumn Binding="{Binding Path=Name}"  IsReadOnly="True"  Width="3*"></DataGridTextColumn>
                <DataGridTextColumn Binding="{Binding Path=DateOfBirth, StringFormat='{}{0:dd.MM.yyyy}'}"  Width="3*" IsReadOnly="True"></DataGridTextColumn>
                <DataGridTextColumn Binding="{Binding Path=Parameter1}"  IsReadOnly="True" Width="3*"></DataGridTextColumn>
                <DataGridTextColumn Binding="{Binding Path=Parameter2}"  IsReadOnly="True" Width="3*"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>

this.grdContacts.DataContext = ContactBook.Instance;

 public class Contact : IEquatable<Contact>, INotifyPropertyChanged
    {
        public int ID { get; set; }

        public string Name { get; set; }

        public string LastName { get; set; }

        public string MiddleName { get; set; }

        public Sexs Sex { get; set; }

        public string PhoneNumber { get; set; }
        
        ...
    }