/// <summary>
/// Return a deep copy of this collection
/// </summary>
public TravelImageCollection Clone()
{
TravelImageCollection clone = new TravelImageCollection();
foreach (TravelImage image in this)
{
clone.Add(image.Clone());
}
clone.IsModified = this.IsModified;
return(clone);
}
/// <summary>
/// Adds a image to _imageCollection field
/// </summary>
/// <param name="image">a image</param>
private void AddImage(TravelImage image)
{
_imageCollection.Add(image);
}