using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Web.Configuration;
using System.Data;


namespace WebApplication2
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        SqlConnection myConnection;
        string connString = WebConfigurationManager.ConnectionStrings["TestDBConnection"].ConnectionString;
        protected void Page_Load(object sender, EventArgs e)
        {
            myConnection = new SqlConnection(connString);
            try
            {
                myConnection.Open();
                Label1.Text = "<b>Server Versions:</b> " + myConnection.ServerVersion;
                Label1.Text += "<br /><b>Connection Is:</b>" + myConnection.State.ToString();
            }
            catch (Exception err)
            {
                Label1.Text = "Error reading database. ";
                Label1.Text += err.Message;
            }
            finally
            {
                myConnection.Close();
                Label1.Text += "<br /><b>Connection Is:</b>" + myConnection.State.ToString();
            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            myConnection.Open();
            string query = "SELECT * FROM dbo.feladat2";
            SqlDataAdapter SDA = new SqlDataAdapter(query, myConnection);
            DataTable dt = new DataTable();
            SDA.Fill(dt);
            GridView1.DataSource = dt;
            GridView1.DataBind();
            myConnection.Close();
        }
    }
}