/// <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);
}
}
/// <summary>Determines whether the RssItemCollection contains a specific value.</summary>
public bool Contains(RssItem value)
{
return(base.List.Contains(value as object));
}
/// <summary>Inserts an IRssItem to the RssItemCollection at the specified position.</summary>
public void Insert(int index, RssItem value)
{
base.List.Insert(index, value as object);
}
/// <summary>Removes an item to the RssItemCollection.</summary>
public void Remove(RssItem value)
{
base.List.Remove(value as object);
}
/// <summary>Adds an item to the IRssItemCollection.</summary>
public int Add(RssItem value)
{
return(base.List.Add(value as object));
}