public static PaginatedResult <TDest> Paginate <TSource, TDest>(this IQueryable <TSource> query, Pagination pagination, Func <TSource, TDest> map, SortDefinition sort = null)
{
if (query == null)
{
return(null);
}
if (map == null)
{
throw new ArgumentNullException(nameof(map));
}
var result = new PaginatedResult <TDest>();
var set = query;
set = !string.IsNullOrEmpty(sort?.SortBy) ? set.Sort(sort) : set.OrderBy("Id");
if (pagination != null)
{
result.Pagination = pagination;
result.Pagination.TotalCount = set.Count();
set = set.Skip(pagination.ItemsPerPage * (pagination.Page - 1))
.Take(pagination.ItemsPerPage);
}
result.Items = set.AsEnumerable().Select(map).ToList();
return(result);
}
public static PaginatedResult <T> Paginate <T>(this IQueryable <T> query, Pagination pagination, SortDefinition sort = null)
{
return(Paginate(query, pagination, x => x, sort));
}