public static VolumeDiscountCollection LoadForCategory(Int32 categoryId, string sortExpression)
 {
     return(VolumeDiscountDataSource.LoadForCategory(categoryId, 0, 0, sortExpression));
 }
 public static VolumeDiscountCollection LoadForCategory(Int32 categoryId, int maximumRows, int startRowIndex)
 {
     return(VolumeDiscountDataSource.LoadForCategory(categoryId, maximumRows, startRowIndex, string.Empty));
 }
 public static VolumeDiscountCollection LoadForCategory(Int32 categoryId)
 {
     return(VolumeDiscountDataSource.LoadForCategory(categoryId, 0, 0, string.Empty));
 }