PunkHPX8/PunkHPX8_Themes/UserControls/MetalWaferSizeControl.xaml

<UserControl x:Class="PunkHPX8_Themes.UserControls.MetalWaferSizeControl"
             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:PunkHPX8_Themes.UserControls"
             mc:Ignorable="d" x:Name="self"
             d:DesignHeight="70" d:DesignWidth="410">
    <Grid>
        <GroupBox Header="Wafer Sise" Margin="10,0,0,0">
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="100"/>
                    <ColumnDefinition Width="139*"/>
                    <ColumnDefinition Width="135*"/>
                    <ColumnDefinition Width="4*"/>
                </Grid.ColumnDefinitions>

                <Label Grid.Column="0" Content="Wafer Size" FontSize="16" FontWeight="Bold" VerticalContentAlignment="Center" HorizontalContentAlignment="Left" VerticalAlignment="Center" HorizontalAlignment="Left"/>
                <Border Grid.Column="1" Margin="5,5,5,5" Background="Black">
                    <TextBlock  Text="{Binding ElementName=self, Path=MetalWaferSize,StringFormat=\{0\} mm}" Foreground="Lime" FontSize="15" FontWeight="Bold" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                </Border>
                <ComboBox x:Name="cbox" Grid.Column="2" Height="40" Width="135" ItemsSource="{Binding WaferSizeList}" SelectedItem="{Binding ElementName=self,Path=MetalWaferSize}" SelectionChanged="WaferSize_SelectionChanged" Margin="5,0,0,0" VerticalAlignment="Center" HorizontalAlignment="Left" Grid.ColumnSpan="3"/>
            </Grid>

        </GroupBox>
    </Grid>
</UserControl>