using System;

using System.Windows.Forms;

using System.Data.OleDb; 



namespace WindowsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            string connetionString = null;

            OleDbConnection cnn ;

            OleDbCommand cmd ;

            string sql = null;



            connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Your mdb filename;";

            sql = "Your SQL Statement Here like Select Count(*) from product"; 



            cnn = new OleDbConnection(connetionString);

            try

            {

                cnn.Open();

                cmd = new OleDbCommand(sql, cnn);

                Int32 count = Convert.ToInt32(cmd.ExecuteScalar());

                cmd.Dispose();

                cnn.Close();

                MessageBox.Show (" No of Rows " + count);

            }

            catch (Exception ex)

            {

                MessageBox.Show("Can not open connection ! ");

            }

        }

    }

}