使用MVC 5 ADO.NET进行排序和分页

Question

I've the following code:

1. Model

    public int ManufactureID { get; set; } public string Manufacture { get; set; } public string ManufactureDescription { get; set; } public bool IsActive { get; set; } 

2. Controller

    public ActionResult ManufactureIndex(string manufacture = "") { ManufactureRepository ManufactureRepo = new ManufactureRepository(); ModelState.Clear(); ViewBag.sManufacture = manufacture; return View(ManufactureRepo.ManufactureGetAll(manufacture)); } 

3. Repository

    private SqlConnection con; //To Handle connection related activities private void Connection() { con = new SqlConnection(ConfigurationManager.ConnectionStrings["ITPCNMSCon"].ToString()); } //To view employee details with generic list public List<Manufactures> ManufactureGetAll(string manufacture = "") { Connection(); List<Manufactures> EmpList = new List<Manufactures>(); SqlCommand com = new SqlCommand("_spManufactureGet", con) { CommandType = CommandType.StoredProcedure }; if (string.IsNullOrEmpty(manufacture)) { com.Parameters.AddWithValue("@Manufacture", DBNull.Value); } else { com.Parameters.AddWithValue("@Manufacture", manufacture); } SqlDataAdapter da = new SqlDataAdapter(com); DataTable dt = new DataTable(); con.Open(); da.Fill(dt); con.Close(); //Bind EmpModel generic list using LINQ EmpList = (from DataRow dr in dt.Rows select new Manufactures() { ManufactureID = Convert.ToInt32(dr["ManufactureId"]), Manufacture = Convert.ToString(dr["Manufacture"]), ManufactureDescription = Convert.ToString(dr["ManufactureDescription"]), IsActive = Convert.ToBoolean(dr["IsActive"]) }).ToList(); return EmpList; } 

4. Store Procedure

    SELECT * FROM _Manufacture WHERE Manufacture = ISNULL(@Manufacture,Manufacture) ORDER BY Manufacture 

My question is, I want to provide a sorting and paging on the view using sql connection. How can I do that? Please advise.

Thank you.

Answer 1

 int pageSize = 10;
 int skip = 0;
 int recordsTotal = 0;

Where pagesize is number of records that you want to display in grid, skip is starting point to pick the records, recordsTotal total number of records in grid.

  recordsTotal = EmpList.Count();
  EmpList= EmpList.Skip(skip).Take(pageSize).ToList();

Answer 2

You need to pass page number and number and number of records you want to fetch per request.

@PageNumber int
@Records int


Declare @StartingPoint int, @EndingPoint int
Set @StartingPoint = ((@PageNumber -1 ) * @Records)+1
Set @EndingPoint = @PageNumber  * @Records
Select * from (
  Select Dense_Rank() over(order by <PK>) Order,* from <Table>
)TempRecord where [Order]>= @StartingPoint  and [Order]<=@EndingPoint 

So now when you call this store procedure pass PageNumber and Records parameter value

When you pass 1 for PageNumber and 10 for Records StartingPoint will be 1 and EndingPoint will be 10 so you get 10 records Similarly for Page 2 StartingPoint will be 11 and EndingPoint will be 20 thus you will get 10 records.

Answer 3

Thank you for all the answer. I have my own answer. I am following below tutorial to create sorting and paging.

Sorting, Filtering, and Paging with the Entity Framework in an ASP.NET MVC Application

Really appreciated.
Thank you.