How to do Data Binding in Gridview?

Using(SqlConnection con=new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["master"].ConnectionString))
        {
            con.Open();
            SqlCommand cmd = new SqlCommand("select  *  from userinfo ", con);
            DataTable dt = new DataTable();
            SqlDataAdapter adpt = new SqlDataAdapter(cmd);
            adpt.Fill(dt);
            GridView1.DataSource = null;
            GridView1.DataSource = dt;
            GridView1.DataBind();
}