Bind GridView with MS Access Database Table in ASP.NET

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 WindowsFormsApplication
{
    public partial class EmployeeInfo : Form
    {
        OleDbDataAdapter accountsTableAdapter = new OleDbDataAdapter();
        DataSet accountsDataSet = new DataSet();

        public EmployeeInfo()
        {
            InitializeComponent();
        }
        private void EmployeeInfo_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'msaccessDataSet.EmployeeInfo' table. You can move, or remove it, as needed.
            this.employeeInfoTableAdapter.Fill(this.msaccessDataSet.EmployeeInfo);
            LoadData();
        }
        public void LoadData()
        {
            string connetionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();
            string sql = "SELECT * FROM EmployeeInfo";
            OleDbConnection connection = new OleDbConnection(connetionString);
            OleDbDataAdapter dataadapter = new OleDbDataAdapter(sql, connection);
            DataSet ds = new DataSet();
            connection.Open();
            dataadapter.Fill(ds, "EmployeeInfo");
            connection.Close();
            dataGridView1.DataSource = ds;
            dataGridView1.DataMember = "EmployeeInfo";
        }
        private void btnInsert_Click(object sender, EventArgs e)
        {
            OleDbConnection conn = new OleDbConnection();
            conn.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ToString();
            String name = txtName.Text;
            int Age = Convert.ToInt32(txtAge.Text);
            String Qualification = txtQualification.Text;
            string Date = Convert.ToString(dateTimePicker1.Value.ToShortDateString());
            string qry = "INSERT INTO EmployeeInfo([Name],[Qualification],[Age],[Date]) Values(@Name,@Qualification,@Age,@Date)";
            Console.Write(qry);
            OleDbCommand cmd = new OleDbCommand(qry);
            cmd.Connection = conn;
            conn.Open();

            if (conn.State == ConnectionState.Open)
            {
                cmd.Parameters.Add("@Name", OleDbType.VarChar).Value = name;
                cmd.Parameters.Add("@Qualification", OleDbType.VarChar).Value = Qualification;
                cmd.Parameters.Add("@Age", OleDbType.Integer).Value = Age;
                cmd.Parameters.Add("@Date", OleDbType.VarChar).Value = Date;

                try
                {
                    cmd.ExecuteNonQuery();
                    MessageBox.Show("Data Inserted");
                    conn.Close();
                    LoadData();
                    //to clear the text field (name)
                    txtName.Text = "";
                    txtQualification.Text = "";
                    txtAge.Text = "";
                }
                catch (OleDbException ex)
                {
                    MessageBox.Show(ex.Source);
                    conn.Close();
                }
            }
            else
            {
                MessageBox.Show("Connection Failed");
            }
        }
        private void Close_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        private void btnDelete_Click(object sender, EventArgs e)
        {
            foreach (DataGridViewRow item in this.dataGridView1.SelectedRows)
            {
                dataGridView1.Rows.RemoveAt(item.Index);
            }
        }

    }
}