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- var ascendingQuery = from data in dataList
- orderby data.Property ascending
- select data;
- var descendingQuery = from data in dataList
- orderby data.Property descending
- select data;
- public static IOrderedEnumerable<TSource> OrderByWithDirection<TSource,TKey>
- (this IEnumerable<TSource> source,
- Func<TSource, TKey> keySelector,
- bool descending)
- {
- return descending ? source.OrderByDescending(keySelector)
- : source.OrderBy(keySelector);
- }
- public static IOrderedQueryable<TSource> OrderByWithDirection<TSource,TKey>
- (this IQueryable<TSource> source,
- Expression<Func<TSource, TKey>> keySelector,
- bool descending)
- {
- return descending ? source.OrderByDescending(keySelector)
- : source.OrderBy(keySelector);
- }
- var query = dataList.OrderByWithDirection(x => x.Property, direction);
- var qry = from .... // or just dataList.AsEnumerable()/AsQueryable()
- if(sortAscending) {
- qry = qry.OrderBy(x=>x.Property);
- } else {
- qry = qry.OrderByDescending(x=>x.Property);
- }
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