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Check if ToPagedListAsync has items before executing the main query #143

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Check if ToPagedListAsync has items before executing the main query #143

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13 changes: 13 additions & 0 deletions UnitOfWork/Collections/IQueryablePageListExtensions.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
Expand Down Expand Up @@ -28,6 +29,18 @@ public static class IQueryablePageListExtensions
}

var count = await source.CountAsync(cancellationToken).ConfigureAwait(false);

if (count == 0)
return new PagedList<T>()
{
PageIndex = pageIndex,
PageSize = pageSize,
IndexFrom = indexFrom,
TotalCount = count,
Items = new List<T>(),
TotalPages = 0
};

var items = await source.Skip((pageIndex - indexFrom) * pageSize)
.Take(pageSize).ToListAsync(cancellationToken).ConfigureAwait(false);

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