insert into ms access db from another database with c# code

Question

I use the following code to insert a record from one database to another but it doesn't work. I tried the query in MS-ACCESS 2007 and it works fine but it doesn't work when called programmatically from my C# code?

string query_insert = "INSERT INTO Questionnaires_Table(BranchName,Factor,Region,Branch_ID,Current_Date,No_Employees) "
    + "SELECT BranchName,Factor,Region,Branch_ID,Current_Date,No_Employees "
    + "FROM Questionnaires_Table IN '" + dialog.FileName + "' Where Branch_ID = " + textBox1.Text ;

dbConnDest.Open();


   OleDbDataAdapter dAdapter = new OleDbDataAdapter();
   OleDbCommand cmd_insert = new OleDbCommand(query_insert, dbConnDest);

   dAdapter.InsertCommand = cmd_insert;
   cmd_insert.ExecuteNonQuery();

dbConnDest.Close();

When I take the the content of query_insert in ms access, it works fine

It throws

INSERT INTO syntax error exception in line cmd_insert.ExecuteNonQuery();

EDIT

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;

namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            OpenFileDialog dialog = new OpenFileDialog();

            dialog.Title = "select database";



            if ((dialog.ShowDialog() == DialogResult.OK) && (textBox1.Text == ""))
            {
                    MessageBox.Show("insert reference year", "", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            else
            {




                    OleDbConnection dbConnDest;
                    dbConnDest = new OleDbConnection(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source= C:\Users\SystemA.accdb;Persist Security Info=False;");

                    try
                    {



                        string query_insert = "INSERT INTO Questionnaires_Table(BranchName,Factor,Region,Branch_ID,Current_Date,No_Employees) "
                                               + "SELECT BranchName,Factor,Region,Branch_ID,Current_Date,No_Employees "
                                               + "FROM Questionnaires_Table1 IN '" + dialog.FileName + "' Where ReferenceYear = " + textBox1.Text + ";";




                        dbConnDest.Open();



                        OleDbCommand cmd_insert = new OleDbCommand(query_insert, dbConnDest);

                        try
                        {
                            cmd_insert.ExecuteNonQuery();
                        }
                        catch (Exception g)
                        {
                            MessageBox.Show(g.ToString());
                        }



                        textBox2.Text = query_insert.ToString();

                        dbConnDest.Close();
                    }
                    catch (Exception h)
                    {
                        MessageBox.Show(h.ToString());
                    }



                }


        }

    }
}

EDIT

Answer 1

您在query_insert中缺少“值”关键字。

Answer 2

I have found a different syntax in this Microsoft forum

  INSERT INTO [AccessTable] SELECT * FROM [MS Access;DATABASE=D:\My Documents\db2.mdb].[Table2]

so you could try this

string query_insert = "INSERT INTO Questionnaires_Table " +
    "(BranchName,Factor,Region,Branch_ID,[Current_Date],No_Employees) " +
    "SELECT BranchName,Factor,Region,Branch_ID,[Current_Date],No_Employees " +
    "FROM [MS Access;DATABASE=" + dialog.FileName  + "].Questionnaires_Table " +
    "Where Branch_ID = @branch";

dbConnDest.Open();
OleDbCommand cmd_insert = new OleDbCommand(query_insert, dbConnDest);
cmd_insert.Parameters.AddWithValue("@branch", textBox1.Text);
cmd.ExecuteNonQuery();

Tested with "Provider=Microsoft.ACE.OLEDB.12.0;"

However, with more research it is clear that the syntax error given is due to the presence of a reserved keyword CURRENT_DATE. This could be resolved encapsulating the field name with square brackets.

By the way, the IN syntax works as well once cured the problem of CURRENT_DATE.

Answer 3

I'm not really familiar with ms access queries but I think you shouldn't use OleDbDataAdapter. The code should look similar to following:

string query_insert = "INSERT INTO Questionnaires_Table(BranchName,Factor,Region,Branch_ID,Current_Date,No_Employees) "
    + "SELECT BranchName,Factor,Region,Branch_ID,Current_Date,No_Employees "
    + "FROM Questionnaires_Table IN '" + dialog.FileName + "' Where Branch_ID = " + textBox1.Text ;

dbConnDest.Open();

OleDbCommand cmd_insert = new OleDbCommand(query_insert, dbConnDest);
cmd_insert.ExecuteNonQuery();

dbConnDest.Close();

Answer 4

Like others said, thats a SQL syntax problem. You are missing the VALUES keyword, look:

INSERT INTO TABLENAME (COL1, COL2, COL2) VALUES (VAL1, VAL2, VAL3)

Where is your VALUES keyword?