How to retrieve values in datagridview in windows applications.

static string ConStr = @"Data Source=ROHIT-PC\SQLEXPRESS;Initial Catalog=MPAdvisor;Integrated Security=True";
        SqlConnection con = new SqlConnection(ConStr);

string query = "select * from users";

            SqlDataAdapter da = new SqlDataAdapter(query, con);
            DataTable dt = new DataTable();
            da.Fill(dt);
           
            GridView1.DataSource = dt;