/// <summary>
/// Initializes a new instance of the <see cref="PagedListData<T>"/> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="pagedListConfig">The paged list config.</param>
public PagedListData(IQueryable <T> source, PagedListConfig pagedListConfig)
{
TotalCount = source.Count();
PageIndex = pagedListConfig.PageIndex;
PageSize = pagedListConfig.PageSize;
TotalPage = (int)Math.Ceiling(TotalCount / (decimal)PageSize);
// if source is not already ordered then get order by
if (!source.IsOrdered())
{
OrderBy = pagedListConfig.OrderBy ?? source.ElementType.GetProperties().First(w => !w.GetCustomAttributes(typeof(NotMappedAttribute), true).Any()).Name; // default to first field if no orderby was supplied
source = source.OrderBy(OrderBy);
}
var queryResult = source.Skip <T>((PageIndex - 1) * PageSize).Take <T>(PageSize).ToList <T>();
AddRange(queryResult);
// copy back to pagedListConfig
pagedListConfig.TotalPage = TotalPage;
pagedListConfig.TotalCount = TotalCount;
pagedListConfig.OrderBy = OrderBy;
}
/// <summary>
/// Convert IQueryable to paged list.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="source">The IQueryable source.</param>
/// <param name="pagedListConfig">The paged list config.</param>
/// <returns>
/// <c>PagedList</c>
/// </returns>
public static PagedList <T> ToPagedList <T>(this IQueryable <T> source, PagedListConfig pagedListConfig)
{
var pagedList = new PagedListData <T>(source, pagedListConfig);
var plw = new PagedList <T> {
Data = pagedList, Config = pagedListConfig
};
return(plw);
}
