/// <summary>
/// Check if we can do command photoUp
/// </summary>
/// <param name="image">CurrentImage</param>
private void ChangePhotoToUp(Image image)
{
int index = ImageCollection.IndexOf(image);
index--;
CurrentImage = ImageCollection[index];
}
/// <summary>
/// Command PhotoDown method
/// </summary>
/// <param name="image">CurrentImage</param>
/// <returns></returns>
private bool CanPhotoUp(Image image)
{
int index = ImageCollection.IndexOf(image);
index--;
return(index > -1);
}
/// <summary>
/// Check if we can do command photoDown
/// </summary>
/// <param name="image">CurrentImage</param>
/// <returns></returns>
private bool CanPhotoDown(Image image)
{
if (image == null)
{
return(false);
}
int index = ImageCollection.IndexOf(image);
index++;
return(index < ImageCollection.Count);
}