title: Interaction Trigger before selectionChanged of ListPicker in Windows Phone 8
body: <p>I have a issue when trigger comes in ViewModel the SelectedItem(parameter) comes the previously selected Item. I need the newly selected item as parameter on selectionChanged.</p>
  
  <p>I am new in WP8. Below is the code</p>
  
  <pre><code>    &lt;toolkit:ListPicker Header="Background"
                                      ExpansionMode="FullscreenOnly"
                                      Template="{StaticResource ListPickerControlTemplate}"
                                      VerticalAlignment="Top"
                                      ItemsSource="{Binding Path=Buildings.ObjectList}"
                                      Margin="0"
                                      x:Name="buldings"
                                      Padding="0"&gt;
                      &lt;i:Interaction.Triggers&gt;
                          &lt;i:EventTrigger EventName="SelectionChanged"&gt;
                              &lt;i:InvokeCommandAction  Command="{Binding Path=BuildingSelectionCommand}"
                                                      CommandParameter="{Binding Path=SelectedItem, ElementName=buldings}" /&gt;
                          &lt;/i:EventTrigger&gt;
                      &lt;/i:Interaction.Triggers&gt;
  </code></pre>
  
  <p>Thanks
  Vinod</p>