How to reference a control in a DataTemplate?

Hi all,

Another (hopefully) easy question.  And yes, I have searched for the answer first.

I have a dataTemplate:

<DataTemplate x:Key="codeTypeTemplate"><StackPanel Orientation="Horizontal"><Border BorderThickness="0,0,1,0"
			BorderBrush="Black"><TextBlock Text="{Binding Path=code}"
				Name="txtCode"
				mvvm:View.WidthEx="6"></TextBlock></Border><TextBlock Text="{Binding Path=description}"
			mvvm:View.WidthEx="15"
			Margin="1"></TextBlock></StackPanel></DataTemplate>

This works fine.  I reference it in a style I use for comboBoxes:

<Style BasedOn="{StaticResource {x:Type ComboBox}}"
		TargetType="ComboBox"
		x:Key="cboCodeTypeStyle"><Setter Property="IsSynchronizedWithCurrentItem"
					Value="True" /><Setter Property="SelectedValuePath"
					Value="code" /><Setter Property="IsEditable"
					Value="true" /><Setter Property="IsReadOnly"
					Value="false" /><Setter Property="mvvm:View.FlowsWithPrevious"
					Value="True" /><Setter Property="TextSearch.TextPath"
					Value="code" /><Setter Property="ItemTemplate"
					Value="{StaticResource codeTypeTemplate}" /></Style>

So my ComboBox looks like this:

<ComboBox Name="cboCit_type"
	Style="{StaticResource cboCodeTypeStyle}"
	ItemsSource="{Binding Path=cuCodeInfo.CitTypes}"
	SelectedValue="{Binding cit_type}"
	Text="{Binding cit_type}" />

And it all works great (thanks to some of the helpful folk around here!)

But now I have a situation where I want to change the size of one of the textboxes referenced in the DataTemplate.  I was hoping that, since I gave it a name, I put the following in the xaml for the comboBox:

txtCodeElement.Width ="10"

But, as you probably know, this won't work.  What could I add to the ComboBox xaml so I can override the default width?  Or what should I change in the DataTemplate so I can make such a change?  I would prefer to NOT have to do this with code.

Thank you,

Fletcher

me (and yes, I DO mark correct answers)