/// <summary>
///获取分页数据
/// </summary>
/// <param name="pageIndex">页码</param>
/// <param name="pageCount">页大小</param>
/// <param name="specification">条件</param>
/// <param name="orderByExpressions">是否排序</param>
/// <returns>实体的分页数据</returns>
public PagedList <TEntity> GetPaged(int pageIndex, int pageCount, ISpecification <TEntity> specification,
SortExpression <TEntity> orderByExpressions = null)
{
if (pageIndex == 0)
{
pageIndex = 1;
}
var set = GetAllMatching(specification);
int totel = set.Count();
IEnumerable <TEntity> items;
if (orderByExpressions != null && orderByExpressions.IsNeedSort())
{
items = orderByExpressions.BuildSort(set).Skip(pageCount * (pageIndex - 1)).Take(pageCount);
}
else
{
items = set.OrderByDescending(item => item.Id).Skip(pageCount * (pageIndex - 1)).Take(pageCount);
}
return(new PagedList <TEntity>(totel, pageCount, pageIndex, items.ToList()));
}
