MainWindow.xaml

<Window x:Class="NotifyChangeExample.MainWindow"
        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:NotifyChangeExample"
        mc:Ignorable="d"
        Title="NotifyPropertyChange Example Application" Height="450" Width="800">
    <Grid Background="{Binding Background.Color}">
        <DockPanel LastChildFill="false">
            <StackPanel Width="150" DockPanel.Dock="Top">
                <TextBlock Text="{Binding Person.Name, StringFormat=Welcome {0}}"/>
                <TextBox Text="{Binding Person.Name, Mode=OneWayToSource, UpdateSourceTrigger=PropertyChanged}"/>
                <Button Content="Submit"/>
            </StackPanel>
            <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" DockPanel.Dock="Bottom">
                <Button Click="Red_Clicked">Red Background</Button>
                <Button Click="Blue_Clicked">Blue Background</Button>
                <Button Click="Yellow_Clicked">Yellow Background</Button>
            </StackPanel>
        </DockPanel>
    </Grid>
</Window>