/// <summary>
/// Returns an asynchronous task that returns a PageResult containing the specified page of data.
/// </summary>
/// <param name="query">The Linq query defining the rows belonging to the resulting dataset.</param>
/// <param name="pageNumber">The 1-based offset for the page of data (default = 1).</param>
/// <param name="pageSize">The maximum number of records each page can hold (default = 20).</param>
public static async Task <PagedResult <T> > PagedResultAsync <T>(this IQueryable <T> query, int pageNumber = 1, int pageSize = 20) where T : class
{
var pagedResult = new PagedResult <T>();
await pagedResult.LoadPageAsync(query, pageNumber, pageSize);
return(pagedResult);
}
