我试图将 SQL 查询的结果显示到 datagridview
中,如下所示:
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();
}
但是,当我运行代码时,出现错误,其中要插入第一行的列,并显示
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
我做错了什么?
最佳答案
您可以通过读取DataReader
来填充datagridview
。在这种情况下,您需要将行显式添加到 datagridview
。您当前尝试访问尚不存在的行。
假设当您启动循环时datagridview
为空。只需添加:
while (reader_.Read())
{
dbgCPNlist.Rows.Add();
...
关于c# - 索引超出范围c#datagridview,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18913508/