Inserting data into ms access database 2007 from visual stud

Question

hi

i am new to .net and i am try to Inserting data into ms access database 2007 from visual studio 2005 using c#.net.

i got an error OleDbException was unhanded. Syntax error in INSERT INTO statement.

my code is here

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using System.Data.OleDb;

using Microsoft.VisualBasic;

namespace WindowsApplication2

{

    public partial class Form4 : Form

    {

        private OleDbConnection cn1;

        private OleDbCommand cmd;

        private string sql;

        private OleDbDataReader reader;

        int cnt = 0;

        public Form4()

        {

            cn1 = new OleDbConnection();

            cn1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:\\Users\\hp\\Links\\Documents\\proposed system database\\new ATM Embed Database.mdb";

            cn1.Open();

            InitializeComponent();

        }

private void savebtn_Click(object sender, EventArgs e)

        {

            

            Int32 Account_No, PIN_No;

            Account_No = Int32.Parse(AccounttextBox.Text);

            PIN_No = Int32.Parse(PINtextBox.Text);

            sql = "Insert into ATM(C_Name,Account_No,Card_No,PIN_No)values('" + NametextBox.Text + "','" + AccounttextBox.Text + "','" + CardtextBox.Text + "','" + PINtextBox.Text + "',)";

            cmd = new OleDbCommand(sql, cn1);

            

                int n =cmd.ExecuteNonQuery();

                

               if (n > 0)

                {

                    MessageBox.Show("Record Has Been Saved !!");

                    AccounttextBox.Text = "" + (Account_No + 1);

                    NametextBox.Text = "";

                    CardtextBox.Text = "";

                    PINtextBox.Text = "";

                }

                else

                {

                    MessageBox.Show("Record Not Saved !!");

                }

                cn1.Close();

            }

        }

}

Please help me. 

suggest me solution of this problem.