<Window x:Class="WPF_13_ObservableCollection.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"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="75" />
            <RowDefinition />
        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>
            <ColumnDefinition />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>

        <TextBox Name="TextEntryBox" Height="35" FontSize="16" />

        <Button Grid.Row="0" Grid.Column="1" Name="AddButton" Width="50" Height="35" HorizontalAlignment="Left"
                Click="AddButton_OnClick">
            Add
        </Button>
        <Button Grid.Row="0" Grid.Column="1" Name="DeleteButton" Width="50" Height="35" HorizontalAlignment="Left"
                Margin="60 0 0 0" Click="DeleteButton_OnClick">
            Del
        </Button>
        <Button Grid.Row="0" Grid.Column="1" Name="ClearButton" Width="50" Height="35" HorizontalAlignment="Left"
                Margin="120 0 0 0" Click="ClearButton_OnClick">
            Clear
        </Button>

        <ListView Grid.Column="0" Grid.Row="1" Grid.ColumnSpan="2" Name="EntriesListView"
                  ItemsSource="{Binding Entries}" />
    </Grid>
</Window>