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How to perform custom paging with stored procedure on Grid

 

This knowledge base document explains the way of how to perform custom paging with stored procedure.

  1. Render the Grid with Adaptor.

 

@(Html.EJ().Grid<object>("Editing")

        .Datasource(ds=> ds.URL("DataSource").Adaptor(AdaptorType.UrlAdaptor))

        .AllowPaging()

        .PageSettings(p=> p.PageSize(10).CurrentPage(3))

        .Columns(col =>

        {

            col.Field("OrderID").Add();

            col.Field("CustomerID").Add();

            col.Field("Freight").Add();

            col.Field("EmployeeID").Add();

        })

)

 

 

  1. Create Stored Procedure to perform custom paging

 

CREATE PROCEDURE [dbo].[CustomPaging]

                @SkipCount int,

                @PageSize int,

                @TotalRows int output

AS

BEGIN

SET NOCOUNT ON;

                SELECT @TotalRows = COUNT(*)

    FROM Orders

 

                SELECT * FROM Orders ORDER BY OrderID OFFSET (@SkipCount) ROWS FETCH NEXT @PageSize ROWS ONLY

 

END

               

RETURN 0

 

  1. Pass the skip and take to the stored procedure from the controller.

 

public ActionResult DataSource(DataManager dm)

        {

            DataOperations operation = new DataOperations();

            int count;

            DataTable dt = new DataTable("Order");

            string constring = ConfigurationManager.ConnectionStrings["NORTHWNDConnectionString"].ConnectionString;

            using (SqlConnection con = new SqlConnection(constring))

            {

                using (SqlCommand cmd = new SqlCommand("CustomPaging", con))

                {

                    cmd.CommandType = CommandType.StoredProcedure;

                    cmd.Parameters.AddWithValue("@SkipCount", dm.Skip);

                    cmd.Parameters.AddWithValue("@PageSize", dm.Take);

                    cmd.Parameters.Add("@TotalRows", SqlDbType.Int, 4);

                    cmd.Parameters["@TotalRows"].Direction = ParameterDirection.Output;

                    con.Open();

                    SqlDataReader dr = cmd.ExecuteReader();

                    dt.Load(dr); // Load into the dataTable

                    dr.Close();

                    con.Close();

                    count = Convert.ToInt32(cmd.Parameters["@TotalRows"].Value);

                }

            }

            //Convet the dataTable into list

            List<EditableOrder> resList = new List<EditableOrder>();

            resList = (from DataRow dr in dt.Rows

                      select new EditableOrder()

                         {

                             OrderID = Convert.ToInt32(dr["OrderID"]),

                             CustomerID = dr["CustomerID"].ToString(),

                             EmployeeID = Convert.ToInt32(dr["EmployeeID"]),

                             Freight = Convert.ToDecimal(dr["Freight"]),

                             ShipCity = dr["ShipCity"].ToString()

                             

                         }).ToList();

            return Json(new { result = resList, count = count }, JsonRequestBehavior.AllowGet);

        }

 

The following screenshot display the custom paging request and response.

 

Figure 1: Request header

 

Figure 2: Response header

 

Figure 3: Output

 

Article ID: Published Date: Last Revised Date: Platform: Control:
7991 09/15/2017 09/15/2017 ASP.NET MVC Grid
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