How to connect database to bootstrap HTML table in C# ASP.NET webform

StringBuilder table = new StringBuilder();

        protected void Page_Load(object sender, EventArgs e)
        {
            if(!Page.IsPostBack)
            {
                SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\odt\Documents\login.mdf;Integrated Security=True;Connect Timeout=30");
               ;
                con.Open();
                SqlCommand cmd = new SqlCommand();
                cmd.CommandText = "select * from [log] ";
                cmd.Connection = con;
                SqlDataReader dt = cmd.ExecuteReader();

                
                if (dt.HasRows)
                {
                    if (dt.Read())
                    {
                    }
                }
            //    cmd.ExecuteNonQuery();
                con.Close();
            }

<div class="box-body table-responsive no-padding">
              <table ID="tdb" class="table table-hover" >
                <tr>
                  <th>ID</th>
                  <th>User</th>
                     <th>Password</th>