1<Window x:Class="MVPtoMVVM.mvvm.MainWindow"
 2        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 3        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 4        Title="MainWindow" Height="350" Width="525">
 5    <DockPanel LastChildFill="False">
 6        <DockPanel.Resources>
 7            <Style x:Key="ValidationStyle" TargetType="Control">
 8        <Style.Triggers>
 9            <Trigger Property="Validation.HasError" Value="true">
10                <Setter Property="Control.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=(Validation.Errors)[0].ErrorContent}" />
11                <Setter Property="Control.BorderBrush" Value="Red" />
12                <Setter Property="Control.BorderThickness" Value="2" />
13            </Trigger>
14        </Style.Triggers>
15        </Style>
16        </DockPanel.Resources>
17        <ListView DockPanel.Dock="Top" ItemsSource="{Binding Path=TodoItems}">
18            <ListView.ItemTemplate>
19                <DataTemplate>
20                <StackPanel Orientation="Horizontal">
21                    <Image Source="alert.png" Visibility="{Binding Path=ShowDueSoonAlert, Mode=OneWay}"/>
22                    <TextBox Width="200" Text="{Binding Path=Description, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" Style="{StaticResource ResourceKey=ValidationStyle}" />
23                    <DatePicker SelectedDate="{Binding Path=DueDate, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged}" Style="{StaticResource ResourceKey=ValidationStyle}" />
24                    <Button Content="Save" Command="{Binding Path=SaveCommand}"></Button>
25                    <Button Content="Del" Command="{Binding Path=DeleteCommand}"></Button>
26                </StackPanel>
27                </DataTemplate>
28            </ListView.ItemTemplate>
29        </ListView>
30        <DockPanel DockPanel.Dock="Bottom" LastChildFill="False">
31            <Button Content="Cancel Changes" DockPanel.Dock="Right" Command="{Binding Path=CancelChangesCommand}"/>
32            <Button Content="Add New Item" DockPanel.Dock="Right" Command="{Binding Path=AddNewItemCommand}"/>
33        </DockPanel>
34    </DockPanel>
35</Window>