title: WPF Combobox - Edited selected text
body: <p>i have combobox with multiple lines in ComboboxItem. But i would like when i select item show only one line. Refer to the exhibit:
  <a href="https://i.stack.imgur.com/wWmvf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wWmvf.png" alt="enter image description here"></a></p>
  
  <p>This is my code:</p>
  
  <pre><code>&lt;ComboBox ItemsSource="{Binding Path=QuickSelectionDates}"    SelectedValuePath="Value" Width="110" Height="20"   VerticalContentAlignment="Center"
  SelectedValue="{Binding Path=QuickSelectionDate, UpdateSourceTrigger=PropertyChanged}" Name="QuickSelectionDatesCombo"
                        Margin="5 0 0 0" IsEnabled="{Binding IsEnabled, UpdateSourceTrigger=PropertyChanged}"&gt;
                  &lt;ComboBox.ItemTemplate&gt;
                      &lt;DataTemplate DataType="{x:Type library:ValueItem}"&gt;
                          &lt;StackPanel Orientation="Vertical"&gt;
                              &lt;TextBlock  Text="{Binding Description}" FontSize="11" FontWeight="Bold"/&gt;
                              &lt;TextBlock Text="{Binding AdditionalDesctiption}" FontSize="10"/&gt; &lt;!--DATE RANGE (second line)--&gt;
                          &lt;/StackPanel&gt;
                      &lt;/DataTemplate&gt;
                  &lt;/ComboBox.ItemTemplate&gt;
                  &lt;i:Interaction.Triggers&gt;
                      &lt;i:EventTrigger EventName="SelectionChanged"&gt;
                          &lt;i:InvokeCommandAction Command="{Binding QuickSelectionDateCommand}" 
                                                 CommandParameter="{Binding ElementName=QuickSelectionDatesCombo, Path=SelectedValue}"/&gt;
                      &lt;/i:EventTrigger&gt;
                  &lt;/i:Interaction.Triggers&gt;
              &lt;/ComboBox&gt;
  </code></pre>
  
  <p>Thanks for help</p>