/// <summary>
/// Initializes a new instance of the <see cref="CategoryManager"/> class.
/// </summary>
public CategoryManager()
{
this.categoryDalManager = new CategoryDalManager();
}
/// <summary>
/// Initializes a new instance of the <see cref="BookDalManager"/> class.
/// </summary>
public BookDalManager()
{
sqlDalManager = new SqlDalManager();
categoryDalManager = new CategoryDalManager();
}