/// <summary>
/// Order an <see cref="IQueryable{TSource}"/>
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <param name="source"></param>
/// <param name="orderitems"><see cref="IEnumerable{IOrderItem}"/></param>
/// <returns></returns>
public static IOrderedQueryable <TSource> OrderBy <TSource>(this IQueryable <TSource> source, IEnumerable <IOrderItem> orderitems)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (!orderitems.Any())
{
return((IOrderedQueryable <TSource>)source);
}
var isOrderby = true;
var processed = false;
//Can not convert source to IOrderedQueryable
// => gives error
IOrderedQueryable <TSource> returnOrder = null;
foreach (var orderitem in orderitems)
{
returnOrder = isOrderby
? OrderByInternal.QueryableOrder(source, orderitem, out processed)
: OrderByInternal.QueryableOrderThenBy(returnOrder, orderitem);
if (isOrderby && processed)
{
isOrderby = false;
}
}
return(returnOrder);
}
/// <summary>
/// Order <see cref="IOrderedQueryable{TSource}"/> then by
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <param name="source"></param>
/// <param name="orderitem"><see cref="IOrderItem"/></param>
/// <returns></returns>
public static IOrderedQueryable <TSource> ThenBy <TSource>(this IOrderedQueryable <TSource> source, IOrderItem orderitem)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
return(OrderByInternal.QueryableOrderThenBy(source, orderitem));
}
/// <summary>
/// Order <see cref="IOrderedQueryable{TSource}"/> then by
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <param name="source"></param>
/// <param name="sortColum">name of the column to sort on</param>
/// <param name="orderDirection"><see cref="OrderDirectionEnum"/></param>
/// <returns></returns>
public static IOrderedQueryable <TSource> ThenBy <TSource>(this IOrderedQueryable <TSource> source, string sortColum, OrderDirectionEnum orderDirection)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
return(OrderByInternal.QueryableOrderThenBy(source, new OrderItem {
SortColum = sortColum, OrderDirection = orderDirection
}));
}
/// <summary>
/// Order <see cref="IOrderedQueryable{TSource}"/> then by
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <param name="source"></param>
/// <param name="sortColum">name of the column to sort on</param>
/// <param name="isDescending">Is the order direction descending</param>
/// <returns></returns>
public static IOrderedQueryable <TSource> ThenBy <TSource>(this IOrderedQueryable <TSource> source, string sortColum, bool isDescending)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
return(OrderByInternal.QueryableOrderThenBy(source, new OrderItem {
SortColum = sortColum, OrderDirection = Orderby.GetOrderDirection(isDescending)
}));
}
/// <summary>
/// Order <see cref="IOrderedQueryable{TSource}"/> then by
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <typeparam name="TKey"></typeparam>
/// <param name="source"></param>
/// <param name="orderitem"><see cref="IOrderItem"/></param>
/// <returns></returns>
public static IOrderedQueryable <TSource> ThenBy <TSource, TKey>(this IOrderedQueryable <TSource> source, OrderItem <TKey> orderitem)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (string.IsNullOrWhiteSpace(orderitem.SortColum))
{
throw new ArgumentException("Input cannot be null or empty", "orderitem.SortColum");
}
return(OrderByInternal.QueryableOrderThenBy(source, orderitem));
}
/// <summary>
/// Order <see cref="IOrderedQueryable{TSource}"/> then by
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <typeparam name="TKey"></typeparam>
/// <param name="source"></param>
/// <param name="sortColum"></param>
/// <param name="orderDirection"><see cref="OrderDirectionEnum"/></param>
/// <param name="comparer"><see cref="IComparer{TKey}" /></param>
/// <returns></returns>
public static IOrderedQueryable <TSource> ThenBy <TSource, TKey>(this IOrderedQueryable <TSource> source, string sortColum, OrderDirectionEnum orderDirection, IComparer <TKey> comparer)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (string.IsNullOrWhiteSpace(sortColum))
{
throw new ArgumentException("Input cannot be null or empty", "sortColum");
}
return(OrderByInternal.QueryableOrderThenBy(source, new OrderItem <TKey> {
SortColum = sortColum, OrderDirection = orderDirection, Comparer = comparer
}));
}
/// <summary>
/// Order <see cref="IOrderedQueryable{TSource}"/> then by
/// </summary>
/// <typeparam name="TSource"></typeparam>
/// <param name="source"></param>
/// <param name="orderitems"><see cref="IEnumerable{IOrderItem}"/></param>
/// <returns></returns>
public static IOrderedQueryable <TSource> ThenBy <TSource>(this IOrderedQueryable <TSource> source, IEnumerable <IOrderItem> orderitems)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (orderitems == null)
{
throw new ArgumentNullException("orderitems");
}
var returnOrder = source;
foreach (var orderitem in orderitems)
{
returnOrder = OrderByInternal.QueryableOrderThenBy(returnOrder, orderitem);
}
return(returnOrder);
}
