I am trying to display the result of an SQL query into a datagridview
as follows:
SqlCommand cmd;
SqlDataReader reader_;
SqlConnection ccs = new SqlConnection(MainForm._constR.ToString());
string strSQL_ = "SELECT cp.CouponNumber as cpn, cp.StopOverCode as xo, cp.ReservationBookingDesignator as RBD, cp.Carrier as carrier, cp.FlightNumber as flightNum, cp.UsedClassofService as class_of_service, cp.FlightDepartureDate as f_d_d, cp.FlightDepartureTime as f_d_t, cp.CouponStatus as cp_stat, cp.FareBasisTicketDesignator as farebasis, cp.NotValidBefore as val_bef, cp.NotValidAfter as val_aft, cp.FreeBaggageAllowance as free_bag_allow, cp.FlightBookingStatus as f_booking_stat, cp.OriginAirportCityCode+'/'+cp.DestinationAirportCityCode as GFPA,cp.UsageOriginCode +'/'+ cp.UsageDestinationCode as usg_sector, cp.UsageAirline as usg_airline, cp.UsageDate as usg_date, cp.UsageFlightNumber as usg_f_num, cp.FrequentFlyerReference as FFP FROM [Biatss_PC].[Pax].[SalesDocumentCoupon] as cp JOIN [Biatss_PC].[Pax].[SalesDocumentHeader] as h on h.DocumentNumber = cp.DocumentNumber WHERE h.DocumentNumber = '2581806273' ";//document number to be parsed
//objCmd = new OleDbCommand(strSQL, objConnection);
cmd = ccs.CreateCommand();
ccs.Open();
cmd.CommandText = strSQL_;
reader_ = cmd.ExecuteReader();
int r_ = 0;
int c_ = 0;
if (reader_.HasRows)
{
while (reader_.Read())
{
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["cpn"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["xo"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["GFPA"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["carrier"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["flightNum"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["class_of_service"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["f_d_d"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["f_d_t"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["cp_stat"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["farebasis"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["val_bef"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["val_aft"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["free_bag_allow"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["f_booking_stat"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["RBD"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_sector"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_airline"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_f_num"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_date"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["FFP"].ToString();
c_++;
//so as to be able to start at column-index zero for next row
c_ = 0;
r_++;
}
ccs.Close();
}
However when I run the code, I get an error where the first row's column is to be inserted saying
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
What did I do wrong ?
You populate the datagridview
by reading a DataReader
. In this case, you need to explicitly add the rows to the datagridview
. You currently try to access a row that doesn't exist yet.
Suppose datagridview
is empty when you start the loop. Just add:
while (reader_.Read())
{
dbgCPNlist.Rows.Add();
...
Crhis Answered Why this error, but why you doing in this way?
You can get DataTable by using SqlDataAdapter
and bind it directly to the GridView as below
using(var conn = new SqlConnection(connString))
{
conn.Open();
var command = new SqlCommand(sqlstring, conn);
var adapter = new SqlDataAdapter(command);
DataTable dt = new DataTable();
adapter.Fill(dt);
dbgCPNlist.DataSource = dt;
dbgCPNlist.DataBind();
}
while (reader_.Read())
{
dbgCPNlist.Rows.Add();
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["cpn"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["xo"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["GFPA"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["carrier"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["flightNum"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["class_of_service"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["f_d_d"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["f_d_t"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["cp_stat"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["farebasis"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["val_bef"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["val_aft"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["free_bag_allow"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["f_booking_stat"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["RBD"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_sector"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_airline"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_f_num"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["usg_date"].ToString();
c_++;
dbgCPNlist.Rows[r_].Cells[c_].Value = reader_["FFP"].ToString();
c_++;
//so as to be able to start at column-index zero for next row
c_ = 0;
r_++;
}
ccs.Close();
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