A C# WPF .NET 4.0 NumberBox UserControl

<UserControl x:Class="NumEditCtrl.NumberBox"
             x:Name="Root"
             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:NumEditCtrl"
             mc:Ignorable="d" 
             d:DesignHeight="23" d:DesignWidth="120" 
             Focusable="True"
             IsTabStop="True"
             GotFocus="Root_GotFocus"
             MouseLeftButtonDown="Root_MouseLeftButtonDown"
             IsEnabledChanged="Root_IsEnabledChanged"
             KeyDown="Root_KeyDown"
             Loaded="Root_Loaded">
    <Grid VerticalAlignment="{Binding VerticalContentAlignment, ElementName=Root}"
          HorizontalAlignment="{Binding HorizontalContentAlignment, ElementName=Root}"
          Height="{Binding Height, ElementName=Root}"
          Width="{Binding Width, ElementName=Root}">
        <TextBox Name="FramePlaceHolder" IsEnabled="{Binding IsEnabled, ElementName=Root}"
                    BorderThickness="{Binding BorderThickness, ElementName=NumTextBox}"
                    Foreground="{Binding Foreground, ElementName=Root}"/>
        <local:DisplayNumEdit x:Name="Display" Text="{Binding Text, ElementName=NumTextBox}" 
                                TextAlignment="{Binding TextAlignment, ElementName=NumTextBox}"
                                Margin="{Binding BorderThickness, ElementName=FramePlaceHolder}"
                                Foreground="{Binding Foreground, ElementName=FramePlaceHolder}"
                                FontFamily="{Binding FontFamily, ElementName=Root}"
                                FontSize="{Binding FontSize, ElementName=Root}"
                                FontStretch="{Binding FontStretch, ElementName=Root}"
                                FontStyle="{Binding FontStyle, ElementName=Root}"
                                FontWeight="{Binding FontWeight, ElementName=Root}"
                                VerticalContentAlignment="{Binding VerticalContentAlignment, ElementName=Root}"
                                DecimalSeparatorType="{Binding DecimalSeparatorType, ElementName=Root}"
                                NegativeSignType="{Binding NegativeSignType, ElementName=Root}"
                                NegativeSignSide="{Binding NegativeSignSide, ElementName=Root}"
                                NegativePatternType="{Binding NegativePatternType, ElementName=Root}"
                                GroupSeparatorType="{Binding GroupSeparatorType, ElementName=Root}"
                                GroupSize="{Binding GroupSize, ElementName=Root}"
                                NegativeTextBrush="{Binding NegativeTextBrush, ElementName=Root}"
                                ScientificDisplayType="{Binding ScientificDisplayType, ElementName=Root}"/>
        <TextBox Name="NumTextBox"  
                Background="Transparent"
                Foreground="Transparent"
                ContextMenu="{Binding ContextMenu, ElementName=Root}"
                BorderBrush="{Binding BorderBrush, ElementName=Root}"
                FontFamily="{Binding FontFamily, ElementName=Root}"
                FontSize="{Binding FontSize, ElementName=Root}"
                FontStretch="{Binding FontStretch, ElementName=Root}"
                FontStyle="{Binding FontStyle, ElementName=Root}"
                FontWeight="{Binding FontWeight, ElementName=Root}"
                TextAlignment="{Binding TextAlignment, ElementName=Root}"
                VerticalContentAlignment="{Binding VerticalContentAlignment, ElementName=Root}"
                PreviewKeyDown="NumTextBox_PreviewKeyDown"
                LostFocus="NumTextBox_LostFocus"
                PreviewTextInput="NumTextBox_PreviewTextInput"
                PreviewDragEnter="NumTextBox_PreviewDragEnter"
                PreviewDrop="NumTextBox_PreviewDrop">
            <TextBox.CommandBindings>
                <CommandBinding Command="Cut" CanExecute="Command_Cut_CanExecute"/>
                <CommandBinding Command="Paste" CanExecute="Command_Paste_CanExecute"/>
            </TextBox.CommandBindings>
        </TextBox>
    </Grid>
</UserControl>