using System;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
static string cs = @"Data Source = (LocalDB)\MSSQLLocalDB; AttachDbFilename=C:\Users\mi1an\source\repos\DisplayData\DisplayData\App_Data\Database.mdf;Integrated Security = True";
SqlConnection con = new SqlConnection(cs);
protected void Page_Load(object sender, EventArgs e)
{
string query = "SELECT * from Students";
SqlCommand cmd = new SqlCommand(query, con);
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
GridView1.DataSource = reader;
GridView1.DataBind();
con.Close();
}