C#+ACCESS+ASP.NET+VISUAL ESTUDIO 2010

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.Odbc;
using System.Data.OleDb;

namespace PROYECTO272
{
    public partial class inicio : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            OleDbConnection con = new OleDbConnection();
            con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
           "Data Source=c:\\Database2.mdb;";
           //+"Database Password=Secreto;";
            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = con;
            cmd.CommandText = "INSERT INTO pro VALUES(:atrib1,:atrib2)";
            cmd.Parameters.Add(":atrib1", OleDbType.VarChar, 30).Value = TextBox1.Text;
            cmd.Parameters.Add(":atrib2", OleDbType.VarChar, 30).Value = TextBox2.Text;
            int result = 0;
            con.Open();
            result = cmd.ExecuteNonQuery();
            con.Close();
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            OleDbConnection con = new OleDbConnection();
            con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
           "Data Source=c:\\Database2.mdb;";
            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = con;
            cmd.CommandText = "UPDATE pro SET atrib1=:atrib1";
            cmd.Parameters.AddWithValue(":atrib1", TextBox1.Text);
            int result = 0;
            con.Open();
            result = cmd.ExecuteNonQuery();
            con.Close();
        }

        protected void Button3_Click(object sender, EventArgs e)
        {
            OleDbConnection con = new OleDbConnection();
            con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
           "Data Source=c:\\Database2.mdb;";
            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = con;
            cmd.CommandText = "delete from pro where codigo=:atrib1";
            cmd.Parameters.AddWithValue(":atrib1", TextBox2.Text);
            int result = 0;
            con.Open();
            result = cmd.ExecuteNonQuery();
            con.Close();
        }
       
        protected void Button4_Click(object sender, EventArgs e)
        {
            OleDbConnection con = new OleDbConnection();
            con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +
           "Data Source=c:\\Database2.mdb;";
            OleDbCommand cmd = new OleDbCommand();
            cmd.Connection = con;
            OleDbDataAdapter cSeleccion = new OleDbDataAdapter("select * from pro", con);
            DataSet ds = new DataSet();
            cSeleccion.Fill(ds);
            //GridView1.DataSource = ds;
            GridView1.DataBind();
           
        }
    }
}