title: How to find the parent of the BindingList?
body: <p>My Model is as below .  </p>
  
  <pre><code>public class FItem
      {
          public FItem()
          {
              FSubsystems = new BindingList&lt;FSubsystem&gt;();            
          }
  
          public int RecordId { get; set; }
          public string ItemName { get; set; }
  
  
          public BindingList&lt;FSubsystem&gt; FSubsystems { get; set; }
  
  
      }
  
      public class FSubsystem
      {
          public int SubSystemID { get; set; }
          public string ItemName { get; set; }
          public int YearID { get; set; }
      }
  </code></pre>
  
  <p>Code :</p>
  
  <pre><code>FItems = new ObservableCollection&lt;MarketRecord.FItem&gt;();
  FItems.CollectionChanged += OnUiCollectionChanged;
  
  
          private void OnUiCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
          {
              if (e.Action == NotifyCollectionChangedAction.Add)
              {
                  var addedItem = e.NewItems[0] as MarketRecord.FItem;
                  if (addedItem != null)
                  {
                      addedItem.PropertyChanged += OnColumnModified;
  
                      if (addedItem.RecordId == 0)
                          modifedItems.Add(addedItem);
  
  
                      addedItem.FSubsystems.ListChanged += OnColumnModified;
  
                  }
              }
          }
  
  
  
  
  
  
  private void OnColumnModified(object sender, EventArgs e)
       {
          if (sender.GetType().Name == "FItem")
          {
              MarketRecord.FItem modifiedItem = (sender as MarketRecord.FItem);
              if (!modifedItems.Contains(modifiedItem))
                  modifedItems.Add(modifiedItem);
          }
          else
          {
              // add parent of the binding list (i.e fitem object ) add it to             modifedItems
  
  // Find parent here 
          }
  
       }
  </code></pre>
  
  <p>As my code tells I need to find the parent of binding list in else clause of OnColumnModified  . How can I do this ?</p>