Question

现在我真累了！我有这个SP应该采用两个参数和返回五。我试图调用此SP和用于准备报告的返回值。我不知道我做错了什么。请帮忙。这是我的第一个应用程序，我是编程的初学者。任何好的帮助都会非常感激！在此先感谢。

USE [Cmanager]
GO
/****** Object:  StoredProcedure [dbo].[MonthReport]    Script Date: 14-Jan-15 11:01:07     AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Proc [dbo].[MonthReport] 
@toReportDate as datetime = null,
@fromReportDate as datetime = null,
@totalOffering money = null output,
@totalVow money = null output,
@totalTithe money = null output,
@totalMisc money = null output,
@totalIncome money = null output
as 
BEGIN

Select  @totalIncome= Sum(Amount) from IncomeReport where IncDATE between @fromReportDate and @toReportDate

Select @totalOffering = Sum(OfferingAmount) from Offering where OfferingDate between @fromReportDate and @toReportDate

Select  @totalTithe =Sum(TitheAmount) from Tithe where TitheDate between @fromReportDate and @toReportDate

select  @totalVow = Sum(VowAmount) from Vows where VowDate between @fromReportDate and @toReportDate

Select  @totalMisc =Sum(MiscAmount) from Miscellaneous where MiscDate between @fromReportDate and @toReportDate

SELECT  @totalIncome as N'TotalIncome',
    @totalOffering as N'TotalOffering',
    @totalVow as N'TotalVow',
    @totalTithe as N'TotalTithe',
    @totalMisc as N'TotalMisc'

        return
END

我正在使用它们在Visual Studio中调用SP

//try 
        //{
            DataTable dt = new DataTable();
            SqlConnection con = new SqlConnection(@"Data Source=EPRAISE-PC;Initial Catalog=Cmanager;Integrated Security=True");
            con.Open();


            SqlCommand cmd = new SqlCommand("MonthReport", con);


            // Input Stored Procedure Parameters
            //var pa = cmd.Parameters.Add(new SqlParameter("@fromReportDate", SqlDbType.Date));
            //cmd.Parameters.AddWithValue("@fromReportDate", fromMonthDate.Text.Trim());
            cmd.Parameters.Add(new SqlParameter("@toReportDate", SqlDbType.DateTime)).Value =
                Convert.ToDateTime(toMonthDate.Text.Trim());
            cmd.Parameters.Add(new SqlParameter("@fromReportDate", SqlDbType.DateTime)).Value =
                Convert.ToDateTime(fromMonthDate.Text.Trim());
            //pa.Value = fromMonthDate.Text;
            //pa.Direction = ParameterDirection.Input;
            //var p = cmd.Parameters.Add(new SqlParameter("@toReportDate", SqlDbType.Date));
            //cmd.Parameters.AddWithValue("@toReportDate", toMonthDate.Text.Trim());
            //p.Value = toMonthDate.Text;
            //p.Direction = ParameterDirection.Input;

            //Output Stored Procedure Parameters
            using( DataSet ds = new DataSet())
            {

                ds.Clear();
                SqlDataAdapter ada = new SqlDataAdapter(cmd);
                ada.SelectCommand.CommandTimeout = 0;
                ada.Fill(ds);
                con.Close();

                if (ds.Tables[0].Rows.Count == 0)
                {
                    MessageBox.Show("No Record found within the period selected", "Response", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);

                    return;
                }
                else
                {
                    Cmanager.XtraReport1 report = new XtraReport1();

                    var tt = (from DataRow row in dt.Rows
                              select new monthlyRptClass
                              {
                                  TotalIncome = Convert.ToDecimal(row["@totalIncome"]),
                                  TotalVow = Convert.ToDecimal(row["@totalVow"]),
                                  TotalOffering = Convert.ToDecimal(row["@totalOffering"]),
                                  TotalTithe = Convert.ToDecimal(row["@totalTithe"]),
                                  TotalMiscellaneous = Convert.ToDecimal(row["@totalMisc"]),

                              });

                    var binding = (BindingSource)report.DataSource;
                    binding.DataSource = tt; //wahala spot
                    report.ShowPreviewDialog();
                    con.Close();
                }
            }


            var TotalIncome = cmd.Parameters.Add(new SqlParameter("@totalIncome", SqlDbType.Money));
            TotalIncome.Direction = ParameterDirection.Output;
            var TotalVow = cmd.Parameters.Add(new SqlParameter("@totalVow", SqlDbType.Money));
            TotalVow.Direction = ParameterDirection.Output;
            var TotalOffering = cmd.Parameters.Add(new SqlParameter("@totalOffering", SqlDbType.Money));
            TotalOffering.Direction = ParameterDirection.Output;
            var TotalTithe = cmd.Parameters.Add(new SqlParameter("@totalTithe", SqlDbType.Money));
            TotalTithe.Direction = ParameterDirection.Output;
            var TotalMiscellaneous = cmd.Parameters.Add(new SqlParameter("@totalMisc", SqlDbType.Money));
            TotalMiscellaneous.Direction = ParameterDirection.Output;
cmd.ExecuteNonQuery();

'System.NullReferenceException'附加信息：未将对象引用设置为对象的实例

0 个答案: