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;


namespace DataWarehouse
{
    public partial class mainfrm : Form
    {
        public mainfrm()
        {
            InitializeComponent();
        }

        private void mainfrm_Load(object sender, EventArgs e)
        {

        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            try
            {
                /*My Select String I am not having problem with 
                 retrieving the entire sheet but when I try to retreive 
                 a column there comes my problem*/
                string select = "SELECT * FROM [Sheet1$]";

                OleDbConnection Conn = new OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;"+
                    "data source=C:\\Book1.xls;"+
                    "Extended Properties=\"Excel 8.0;HDR=NO;IMEX=1;\"");

                Conn.Open();

                OleDbCommand cmd = new OleDbCommand(select, Conn);
                OleDbDataAdapter da = new OleDbDataAdapter();
                da.SelectCommand = cmd;
                DataTable dt = new DataTable();
                DataSet ds = new DataSet();
                da.Fill(dt); //Line 45

                dataGridView1.DataSource = dt;
                
                Conn.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
    }
}