Procedure or function sp_Procedure expects parameter @RecordCount which was not supplied

Question

I am using 3 tier architecture in c#. i have create database pagination. But I'm getting the error when accessing a Stored Procedure in SQL Server:

"Procedure or function sp_Procedure expects parameter @RecordCount which was not supplied."

ALTER PROCEDURE [dbo].[sp_Procedure]

@PageIndex INT = 1,
@PageSize INT = 10,
@RecordCount INT output,
@Mode varchar(25)
AS

IF (@Mode='DisplayDataPaging')
BEGIN
  SET NOCOUNT ON;
  SELECT ROW_NUMBER() OVER
  (
        ORDER BY [CustomerID] ASC
  )AS RowNumber
  ,[CustomerID]
  ,[CompanyName]
  ,[ContactName]
 INTO #Results
  FROM [Customers]

  SELECT @RecordCount = COUNT(*)
  FROM #Results

  SELECT * FROM #Results
  WHERE RowNumber BETWEEN(@PageIndex -1) * @PageSize + 1 AND(((@PageIndex -1) * @PageSize + 1) + @PageSize) - 1

  DROP TABLE #Results
END
GO

---

Business Logic class code :

public DataSet GetAllJobs(BussinessObj objBussiness)
                {
                    DataSet ds = new DataSet();
                    IDbCommand selectCommand = null;
                    SqlParameter[] param = new SqlParameter[4];
                    param[0] = new SqlParameter("@Mode", "DisplayDataPaging");
                    param[1] = new SqlParameter("@PageIndex", objBussiness.PageIndex);
                    param[2] = new SqlParameter("@PageSize", objBussiness.PageSize);
                    param[3] = new SqlParameter("@RecordCount", SqlDbType.Int, 4);
                    param[3].Direction = ParameterDirection.Output;
                    ds = objDataAccess.ExecuteDataset(_spName, param);
                    objBussiness.RecordCount = Convert.ToInt32((param[3]).Value);
                    return ds;
                }

---

aspx.cs file code :

BussinessObj objBussinessObj = new BussinessObj();
    BussinessLgc objBussinessLogic = new BussinessLgc();

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            this.GetCustomersPageWise(1);
        }
    }

    protected void PageSize_Changed(object sender, EventArgs e)
    {
        this.GetCustomersPageWise(1);
    }

    private void GetCustomersPageWise(int pageIndex)
    {
        objBussinessObj.PageIndex = pageIndex;
        objBussinessObj.PageSize = int.Parse(ddlPageSize.SelectedValue);
        objBussinessLogic.GetAllJobs(objBussinessObj);            
        int recordCount = Convert.ToInt16(objBussinessObj.RecordCount.ToString());
        this.PopulatePager(recordCount, pageIndex);
    }

    protected void Page_Changed(object sender, EventArgs e)
    {
        int pageIndex = int.Parse((sender as LinkButton).CommandArgument);
        this.GetCustomersPageWise(pageIndex);
    }

    private void PopulatePager(int recordCount, int currentPage)
    {
        double dblPageCount = (double)((decimal)recordCount / decimal.Parse(ddlPageSize.SelectedValue));
        int pageCount = (int)Math.Ceiling(dblPageCount);
        List<ListItem> pages = new List<ListItem>();
        if (pageCount > 0)
        {
            pages.Add(new ListItem("First", "1", currentPage > 1));
            for (int i = 1; i <= pageCount; i++)
            {
                pages.Add(new ListItem(i.ToString(), i.ToString(), i != currentPage));
            }
            pages.Add(new ListItem("Last", pageCount.ToString(), currentPage < pageCount));
        }
        rptPager.DataSource = pages;
        rptPager.DataBind();
    }

Answer 1

As you are discovering, output parameters are hard to work with. (At least I think so.) From the looks of your stored proc, the only thing @RecordCount is doing is giving you a count of returned rows. There's a much easier way to do this.

From the stored proc, I would remove the parameter @RecordCount. Then in your code...

public DataSet GetAllJobs(BussinessObj objBussiness)
            {
                DataSet ds = new DataSet();
                IDbCommand selectCommand = null;
                SqlParameter[] param = new SqlParameter[4];
                param[0] = new SqlParameter("@Mode", "DisplayDataPaging");
                param[1] = new SqlParameter("@PageIndex", objBussiness.PageIndex);
                param[2] = new SqlParameter("@PageSize", objBussiness.PageSize);
                ds = objDataAccess.ExecuteDataset(_spName, param);
                objBussiness.RecordCount = ds.tables(0).rows.count;
                return ds;
            }

As I'm sure you know, a DataSet can contain an array of DataTables. Your stored proc only returns one record set, or, one table. So this gives you access to that table:

ds.tables(0) 

This gives you access to all the rows in that table:

ds.tables(0).rows 

And this gives you the number of rows in the table.

ds.tables(0).rows.count 

Let me know if this works for you.

Thanks!

Answer 2

---

Change

@RecordCount INT output

---

to

@RecordCount int=null output