WPF Data Binding - Part 1

<Window x:Class="Example05.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:Example05"
    Title="Window1" Height="300" Width="300">
    <Window.Resources>
        <local:EmployeeList x:Key="myEmployeeList">
            <local:Employee EmployeeNumber="1" FirstName="John" LastName="Dow" Title="Accountant" Department="Payroll" />
            <local:Employee EmployeeNumber="2" FirstName="Jane" LastName="Austin" Title="Account Executive" Department="Customer Management" />
            <local:Employee EmployeeNumber="3" FirstName="Ralph" LastName="Emmerson" Title="QA Manager" Department="Product Development" />
            <local:Employee EmployeeNumber="4" FirstName="Patrick" LastName="Fitzgerald" Title="QA Manager" Department="Product Development" />
            <local:Employee EmployeeNumber="5" FirstName="Charles" LastName="Dickens" Title="QA Manager" Department="Product Development" />
        </local:EmployeeList>
    </Window.Resources>
    <Grid DataContext="{StaticResource myEmployeeList}">
        <Grid.RowDefinitions>
            <RowDefinition Height="45" />
            <RowDefinition Height="*" />
            <RowDefinition Height="45" />
        </Grid.RowDefinitions>
        <ListBox Name="employeeListBox"  ItemsSource="{Binding }" Grid.Row="0" />
        <Grid Grid.Row="1"  DataContext="{Binding ElementName=employeeListBox, Path=SelectedItem}">
            <Grid.RowDefinitions>
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="80" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <Label Grid.Row="0" Grid.Column="0">First Name</Label>
            <Label Grid.Row="1" Grid.Column="0">Last Name</Label>
            <Label Grid.Row="2" Grid.Column="0">Title</Label>
            <Label Grid.Row="3" Grid.Column="0">Department</Label>

            <TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Path=FirstName}" />
            <TextBox Grid.Row="1" Grid.Column="1" Text="{Binding Path=LastName}" />
            <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding Path=Title}" />
            <TextBox Grid.Row="3" Grid.Column="1" Text="{Binding Path=Department}" />
        </Grid>
        <Button Name="cmdAddEmployee" Grid.Row="1" Click="cmdAddEmployee_Click" Height="45" Margin="0,0,0,2" Grid.RowSpan="2" VerticalAlignment="Bottom">Add Employee</Button>
    </Grid>
</Window>