/// <summary>
/// Performs additional custom processes after removing a new element from the CollectionBase instance
/// </summary>
/// <param name="item"></param>
private void DetachItem(RssItem item)
{
System.Diagnostics.Debug.Assert(item != null);
// reset parent channel
item.SetChannel(null);
// describe dirty event
if (item != null && _parent != null)
{
item.PropertyChanged -= new System.ComponentModel.PropertyChangedEventHandler(_parent.OnSubItemPropertyChanged);
}
}
/// <summary>
/// Performs additional custom processes after inserting a new element into the CollectionBase instance
/// </summary>
/// <param name="value"></param>
private void AttachItem(RssItem value)
{
System.Diagnostics.Debug.Assert(value != null);
// set parent channel
value.SetChannel(this._parent);
// subscribe dirty event
if (value != null && _parent != null)
{
value.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(_parent.OnSubItemPropertyChanged);
}
}