作为两个参数,我说
currentPage
和pagesize
.....到目前为止,我使用了sql server存储过程并实现了这样的分页,
GO
ALTER PROCEDURE [dbo].[GetMaterialsInView]
-- Add the parameters for the stored procedure here
@CurrentPage INT,
@PageSize INT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT *,ROW_NUMBER() OVER (ORDER BY Id) AS Row FROM
(
SELECT
*,ROW_NUMBER() OVER (ORDER BY Id) AS Row
FROM InTimePagingView
) AS InTimePages
WHERE Row >= (@CurrentPage - 1) * @PageSize + 1 AND Row <= @CurrentPage*@PageSize
SELECT COUNT(*) as TotalCount FROM InTimePagingView
SELECT CEILING(COUNT(*) / CAST(@PageSize AS FLOAT)) NumberOfPages
FROM InTimePagingView
END
现在我正在使用 Linq-to-sql,并且我使用这个,
public IQueryable<MaterialsObj> FindAllMaterials()
{
var materials = from m in db.Materials
join Mt in db.MeasurementTypes on m.MeasurementTypeId equals Mt.Id
where m.Is_Deleted == 0
select new MaterialsObj()
{
Id = Convert.ToInt64(m.Mat_id),
Mat_Name = m.Mat_Name,
Mes_Name = Mt.Name,
};
return materials;
}
现在我想返回
records,TotalCount
,我使用总计数生成页码.....这可能吗...任何建议...
编辑:
刚刚发现这个...
NorthWindDataContext db = new NorthWindDataContext();
var query = from c in db.Customers
select c.CompanyName;
//Assuming Page Number = 2, Page Size = 10
int iPageNum = 2;
int iPageSize = 10;
var PagedData = query.Skip((iPageNum - 1) * iPageSize).Take(iPageSize);
ObjectDumper.Write(PagedData);
您可以使用 IQueryable.Skip()、.Take() 和 .Count() “手动”完成此操作,也可以使用这种方便的模式:-
public class PagedList<T> : List<T>
{
public PagedList(IEnumerable<T> source, int index, int pageSize)
{
this.TotalCount = source.Count();
this.PageSize = pageSize;
this.PageIndex = index;
this.AddRange(source.Skip(index * pageSize).Take(pageSize).ToList());
}
public int TotalCount { get; set; }
public int PageIndex { get; set; }
public int PageSize { get; set; }
public bool HasPreviousPage
{
get
{
return (PageIndex > 0);
}
}
public bool HasNextPage
{
get
{
return ((PageIndex + 1) * PageSize) < TotalCount;
}
}
}
像这样使用它:-
public ActionResult Materials(int page)
{
var materials = MaterialsRepository.FindAllMaterials();
var results = new PagedList<MaterialsObj>(materials, page - 1, 10);
return new View(results)
}
互联网上有很多带有帮助程序、测试和所有这些爵士乐的实现。我认为原始代码是 ScottGu 提出的,但不要引用我的话。