Transaction Isolation in ADO.NET Entity Framework

<Window x:Class="EFTransactionExample.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        FontFamily="Calibri"
        Title="MainWindow" Height="350" Width="525">
    
    <Grid Margin="10">
        <Grid.RowDefinitions>
            <RowDefinition Height="auto" />
            <RowDefinition Height="auto" />
            <RowDefinition Height="*" />
            <RowDefinition Height="auto" />
        </Grid.RowDefinitions>
        
        <TextBlock Text="Entity Framework Transaction Isolation Level Experiment"
                   Margin="10, 0, 0, 10"
                   FontSize="16" FontWeight="SemiBold" Foreground="Brown" />
        <Grid Grid.Row="1">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>

            <Button Grid.Column="0" Content="Re-set Salary"
                    Margin="10,0,5,0"
                    Command="{Binding ResetSalaryCommand}" />
            <Button Grid.Column="1" Content="Raise Salary"
                    Margin="5,0,5,0" 
                    Command="{Binding RaisetSalaryNonSerializedCommand}" />
            <Button Grid.Column="2" Content="Raise Salary Serialized"
                    Command="{Binding RaisetSalarySerializedCommand}"
                    Margin="5,0,10,0"/>
        </Grid>
        
        <Border Grid.Row="2" BorderThickness="1" BorderBrush="Blue"
                CornerRadius="5" Margin="5">
            <DataGrid ItemsSource="{Binding EmployeeInformation}"
                  IsReadOnly="True" AutoGenerateColumns="False" Margin="10">
                <DataGrid.Columns>
                    <DataGridTextColumn Header="ID" Width="50"
                                    Binding="{Binding ID}" />
                    <DataGridTextColumn Header="Name" Width="300"
                                    Binding="{Binding Name}" />
                    <DataGridTextColumn Header="Salary" Binding="{Binding Salary}" />
                </DataGrid.Columns>
            </DataGrid>
        </Border>

        <TextBlock Grid.Row="3" Text="{Binding StatusInformation}"
                   Margin="10, 0, 0, 0" />
    </Grid>
</Window>