Hello Experts!
i've been trying to have a dynamic ContextMenu to show the name property of each of the object in its collection of objects.
here is concrete example ,i'm connecting to a webservice to pull contacts and groups of a particular account.so i have those as global variables.i display the contacts in a listbox and i want to show on right click of a contact in the listbox the list of groups that it can be added to.
to be able to add a contact to a group i need the id of the contact(which i have) and the id of the group which i'm looking for here is my code.

xmlns:serviceAdmin="clr-namespace:MyWpfApp.serviceAdmin"
......
<ListBox.ContextMenu>
                        <ContextMenu>
                            <MenuItem Header="Refresh" Click="RefreshContact_Click"></MenuItem> 
                            <MenuItem Header="Add New Contact" Click="ContactNew_Click"></MenuItem>
                            <MenuItem Header="Add to Group" Name="groupMenus">
                                //<!--<MenuItem.Resources>
                                  //  <DataTemplate DataType="{x:Type serviceAdmin:groupInfo}" x:Key="groupMenuKey" > 
                                     //   <MenuItem>
                                     //       <TextBlock Text="{Binding name}" />
                                     //   </MenuItem>
                                   // </DataTemplate>

                               // </MenuItem.Resources>-->
                                <MenuItem.ItemContainerStyle>
                                    <Style>
                                        <Setter Property="MenuItem.Header" Value="{Binding name}"/>
                                        <Setter Property="MenuItem.Tag" Value="{Binding id}" />

                                    </Style>
                                </MenuItem.ItemContainerStyle>
                            </MenuItem>
                            <MenuItem Header="Delete Selected" Click="ContactDelete_Click"></MenuItem>
                        </ContextMenu>
                    </ListBox.ContextMenu>
                    ......

and on xaml.cs

//this code is in the method that loads the groups
loadedgroup = service.getGroups(session.key, null);
 groupListBox.ItemsSource = loadedgroup;
 groupMenus.ItemsSource = loadedgroup.ToList();

this code is showing the name of the groups alright but i need the id of the group clicked on.
If you've noticed i commented a portion of the xaml code. with that i could bind(with ease) the id to the tag.But it won't work and the MenuItem.ItemContainerStyle is the one working but then i'm lost:

Question 1 : how do i create a handler method for a click event of a submenu that has the names of the groups?
Question 2 : how do i get the clicked group id to work with?

thanks for reading and kindly help me in this