inabox/inabox.wpf/DynamicGrid/DynamicGridPopupColumnCell.xaml

<UserControl x:Class="InABox.DynamicGrid.DynamicGridPopupColumnCell"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:InABox.DynamicGrid"
             mc:Ignorable="d" 
             x:Name="Cell"
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid Margin="5">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="30"/>
            <ColumnDefinition Width="50"/>
        </Grid.ColumnDefinitions>
        <TextBlock Text="{Binding ElementName=Cell, Path=Display}" VerticalAlignment="Center"/>
        <Button Grid.Column="1" Content=".."
                VerticalAlignment="Stretch" VerticalContentAlignment="Center"
                HorizontalAlignment="Stretch"
                Margin="5,0,0,0"
                Click="Select_Click"/>
        <Button Grid.Column="2" Content="Clear"
                VerticalAlignment="Stretch" VerticalContentAlignment="Center"
                HorizontalAlignment="Stretch"
                Margin="5,0,0,0"
                Click="Clear_Click"/>
    </Grid>
</UserControl>