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Runtime error
| using Microsoft.EntityFrameworkCore; | |
| using TaskTrackingSystem.Shared; | |
| namespace TaskTrackingSystem.WebApi.Infrastructure; | |
| public static class PaginationExtensions | |
| { | |
| public static int NormalizePage(int? page) | |
| { | |
| return page.HasValue && page.Value > 0 ? page.Value : 1; | |
| } | |
| public static async Task<PagedResult<T>> ToPagedResultAsync<T>( | |
| this IQueryable<T> query, | |
| int page, | |
| int pageSize, | |
| CancellationToken cancellationToken = default) | |
| { | |
| pageSize = NormalizePageSize(pageSize); | |
| page = Math.Max(page, 1); | |
| var totalCount = await query.CountAsync(cancellationToken); | |
| var totalPages = totalCount == 0 | |
| ? 0 | |
| : (int)Math.Ceiling(totalCount / (double)pageSize); | |
| if (totalPages > 0 && page > totalPages) | |
| { | |
| page = totalPages; | |
| } | |
| var items = await query | |
| .Skip((page - 1) * pageSize) | |
| .Take(pageSize) | |
| .ToListAsync(cancellationToken); | |
| return new PagedResult<T> | |
| { | |
| Items = items, | |
| TotalCount = totalCount, | |
| Page = page, | |
| PageSize = pageSize, | |
| TotalPages = totalPages | |
| }; | |
| } | |
| public static int NormalizePageSize(int pageSize) | |
| { | |
| if (pageSize <= 0) | |
| { | |
| return 20; | |
| } | |
| return Math.Clamp(pageSize, 1, 100); | |
| } | |
| } | |