Simple paging

Extensions.cs

internal static partial class Extensions
{

    /// <summary>
    /// Paginates the elements of an <see cref="IQueryable{TSource}"/> based on the specified page number and page size.
    /// </summary>
    /// <typeparam name="TSource">The type of the elements of the source.</typeparam>
    /// <param name="source">The source <see cref="IQueryable{TSource}"/> to paginate.</param>
    /// <param name="page">The page number to retrieve. Must be greater than or equal to 1.</param>
    /// <param name="pageSize">The number of elements per page. Must be greater than or equal to 1.</param>
    /// <returns>An <see cref="IQueryable{TSource}"/> that contains the elements from the specified page.</returns>
    /// <remarks>LINQ to SQL</remarks>
    public static IQueryable<TSource> Page<TSource>(this IQueryable<TSource> source, int page, int pageSize)
                => source.Skip((page - 1) * pageSize).Take(pageSize);

    /// <summary>
    /// Paginates the elements of an <see cref="IEnumerable{TSource}"/> based on the specified page number and page size.
    /// </summary>
    /// <typeparam name="TSource">The type of the elements of the source.</typeparam>
    /// <param name="source">The source <see cref="IEnumerable{TSource}"/> to paginate.</param>
    /// <param name="page">The page number to retrieve. Must be greater than or equal to 1.</param>
    /// <param name="pageSize">The number of elements per page. Must be greater than or equal to 1.</param>
    /// <returns>An <see cref="IEnumerable{TSource}"/> that contains the elements from the specified page.</returns>
    /// <remarks>LINQ to Objects</remarks>
    public static IEnumerable<TSource> Page<TSource>(this IEnumerable<TSource> source, int page, int pageSize)
        => source.Skip((page - 1) * pageSize).Take(pageSize);
}