Dynamic GridView

void BindData()
    {
        
        try
        {
     SqlConnection con = new SqlConnection(@"server=.\sqlexpress;database=TestDB;Integrated Security=SSPI;");
    DataSet ds = new DataSet();
 
            con.Open();

            SqlDataAdapter da = new SqlDataAdapter("select id,name,flag from EmpData", con);
          
             da.Fill(ds);


             BoundField BC1 = new BoundField();
            BC1.HeaderText = "ID";
            BC1.DataField = "id";
            GridView1.Columns.Add(BC1);

            BoundField BC2 = new BoundField();
            BC2.HeaderText = "Name";
            BC2.DataField = "name";

            GridView1.Columns.Add(BC2);           

             GridView1.DataSource = ds;
            GridView1.DataBind();
            con.Close();
        }
        catch (Exception e)
        {
            Response.Write(e.Message.ToString());
            con.Close();
        }

    }