protected virtual void OnItemAdding(ItemAddingEventArgs e)
{
if (this.ItemAdding != null)
{
this.ItemAdding(this, e);
}
}
internal bool AddItemManually()
{
ItemAddingEventArgs e = new ItemAddingEventArgs(this.Items.Count);
this.OnItemAdding(e);
if ((e.ListItem != null) && !e.Cancel)
{
this.Items.Add(e.ListItem);
}
return e.Cancel;
}