using System;

using System.Windows.Forms;

using System.Data.SqlClient; 



namespace WindowsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            string connetionString = null;

            SqlConnection sqlCnn ;

            SqlCommand sqlCmd ;

            string sql = null;



            connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password";

            sql = "Your SQL Statement Here , like Select * from product";



            sqlCnn = new SqlConnection(connetionString);

            try

            {

                sqlCnn.Open();

                sqlCmd = new SqlCommand(sql, sqlCnn);

                SqlDataReader sqlReader = sqlCmd.ExecuteReader();

                while (sqlReader.Read())

                {

                    MessageBox.Show(sqlReader.GetValue(0) + " - " + sqlReader.GetValue(1) + " - " + sqlReader.GetValue(2));

                }

                sqlReader.Close();

                sqlCmd.Dispose();

                sqlCnn.Close();

            }

            catch (Exception ex)

            {

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

            }

        }

    }

}