クラスを介してデータベースにデータを挿入することができません。 "無効な列名"

Question

こんにちは私はコードでいくつかの問題があります ボタンを使用してデータベースからクラスにデータを保存しますが、 "私の問題を解決してください。

id接続クラス。

using System; 
using System.Windows.Forms; 
using System.Data.SqlClient; 
using project_airline_oop.user.staft.new_member; 
using project_airline_oop.user.schedules_flights; 

namespace project_airline_oop.dbconnection 
{ 
    public static class dbconnection 
    { 
     private static bool connection; 
     private static string _query; 

     public static readonly string ConnectionString = "Data Source=LUKAAA\\SQLSERVER1;Initial Catalog=airline;Integrated Security=True;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"; 
     public static SqlConnection GetConnection() 
     { 
      SqlConnection conn = null; 
      try 
      { 
       conn = new SqlConnection(ConnectionString); 
       return conn; 
      } 
      catch (Exception ex) 
      { 
       MessageBox.Show(ex.Message); 
      } 

      return conn; 
     } 


    public static bool insertlocalflight(local_scheduleflight ab) 
     { 
      connection = false; 
      using (var con = GetConnection()) 
      { 
       try 
       { 
        con.Open(); 
        _query = "insert into local_fligth_timinig (" + 
         "time_flightlocal," + 
         "local_destination," + 
         "flight_date," + 
         "local_flightname," + 
         "flight_no)" + 
         "values(" + 
         "@time_local," + 
         "@city_local," + 
         "@date_flight," + 
         "@local_airline," + 
         "@flight_number)"; 
        var cmd = new SqlCommand(_query, con); 
        cmd.Parameters.AddWithValue("@time_local", ab.time_flightlocal); 
        cmd.Parameters.AddWithValue("@city_local", ab.local_destination); 
        cmd.Parameters.AddWithValue("@date_flight", ab.flight_date); 
        cmd.Parameters.AddWithValue("@local_airline", ab.local_flightname); 
        cmd.Parameters.AddWithValue("@flight_number",ab.flight_no); 
        cmd.ExecuteNonQuery(); 
        connection = true; 
       } 
       catch(Exception ex) 
       { 
        MessageBox.Show(ex.Message); 
       } 
        finally 
       { 
        con.Close(); 
       } 
       } 
      return connection; 
      } 



     } 

    } 

namespace project_airline_oop.user.schedules_flights 
{ 
    public class local_scheduleflight 
    { 
     public DateTime time_flightlocal { get; set; } 
     public string local_destination { get; set; } 
     public DateTime flight_date { get; set; } 
     public string local_flightname { get; set; } 
     public int flight_no { get; set; } 

    } 
} 

私のクラスであり、それがテーブル

column name  datatype 
time_local  time(7) 
city_local  varchar(50) 
date_flight  date 
local_airline  varchar(50) 
flight_number  int 

あるボタン方式

private void save_flightloacal1_Click(object sender, EventArgs e) 
    { 
     var localflight = new user.schedules_flights.local_scheduleflight 
     { 
      time_flightlocal = flight_time1lo.Value, 
      local_destination = local_airport.DisplayMember, 
      flight_date = Date_flight.Value, 
      local_flightname = local_airport.DisplayMember, 
      flight_no = int.Parse(flight_nolocal.Text), 

     }; 
     if (dbconnection.dbconnection.insertlocalflight(localflight)) 
     { 
      MessageBox.Show("insert first 1 slot"); 
     } 
     else`` 
     { 
      MessageBox.Show("error"); 
     } 
    } 

enter image description here

を保存していますあなたの挿入文

_query = "insert into local_fligth_timinig (" + 
        "time_flightlocal," + 
        "local_destination," + 
        "flight_date," + 
        "local_flightname," + 
        "flight_no)" + 

中

Answer 1

フィールド名が

_query = "insert into local_fligth_timinig (" + 
        "time_local," + 
        "city_local," + 
        "date_flight," + 
        "local_airline," + 
        "flight_number)" + 

へ

column name  datatype 
time_local  time(7) 
city_local  varchar(50) 
date_flight  date 
local_airline  varchar(50) 
flight_number  int 

変更、それはまたのように見えるあなたのテーブルのフィールド名に一致しませんテーブル名にタイプミスがありますが、これはデータベースの中でどのように記述されているのでしょうか。