title: Firing Command from Buttons within Combobox using MVVM Light
body: <p>I am having a problem with a custom ComboxBox firing events.  The idea is to have the combobox bound to a collection of items with an Edit and Delete button in-line with each item.  I can make the click event work using code-behind, but the command binding seems to do nothing.  </p>
  
  <pre><code>    &lt;ComboBox SelectedIndex="0"&gt;
                  &lt;ComboBox.ItemTemplate&gt;
                      &lt;DataTemplate&gt;
                          &lt;Grid&gt;
                              &lt;Grid.ColumnDefinitions&gt;
                                  &lt;ColumnDefinition Width="200"/&gt;
                                  &lt;ColumnDefinition Width="auto"/&gt;
                              &lt;/Grid.ColumnDefinitions&gt;
                          &lt;TextBlock Text="{Binding Name}"/&gt;
                              &lt;StackPanel Grid.Column="1" 
                                          Orientation="Horizontal"
                                          HorizontalAlignment="Right"&gt;
                                  &lt;Button Content="Edit" 
                                          Margin="0,0,5,0" 
                                          Command="{Binding EditConnectionCommand}"
                                          CommandParameter="{Binding ID}"/&gt;
                                  &lt;Button Content="Delete"
                                          Command="{Binding DeleteConnectionCommand}"
                                          CommandParameter="{Binding ID}"/&gt;
                              &lt;/StackPanel&gt;
                          &lt;/Grid&gt;
                      &lt;/DataTemplate&gt;
                  &lt;/ComboBox.ItemTemplate&gt;
                  &lt;ComboBox.ItemsSource&gt;
                      &lt;CompositeCollection&gt;
                          &lt;ComboBoxItem IsEnabled="False" Visibility="Collapsed"&gt;Select a database connection...&lt;/ComboBoxItem&gt;
                          &lt;CollectionContainer Collection="{Binding Source={StaticResource ConnectionsBridge}}" /&gt;
                          &lt;ComboBoxItem&gt;...New Connection...&lt;/ComboBoxItem&gt;
                      &lt;/CompositeCollection&gt;
                  &lt;/ComboBox.ItemsSource&gt;
              &lt;/ComboBox&gt;
  </code></pre>