asp.net开启多线程异步处理

 protected void Page_Load(object sender, EventArgs e)

        {

            if (!IsPostBack)

            {

                try

                {

                    Thread categoryThread = new Thread(new ThreadStart(BindCategory));

                    Thread newsThread = new Thread(new ThreadStart(BindNews));

                    categoryThread.Start();

                    newsThread.Start();

                    categoryThread.Join();

                    newsThread.Join();

                }

                catch (Exception ex)

                {

                    Response.Write(ex);

                }

            }

        }

  void BindCategory()

        {

            SqlConnection conn = ReturnSqlconn();

            SqlCommand comm = new SqlCommand("select * from  [dbo].[Channel_List]", conn);

            conn.Open();

            SqlDataReader sdr = comm.ExecuteReader();

            GridView1.DataSource = sdr;

            GridView1.DataBind();

        }

        void BindNews()

        {

            SqlConnection conn = ReturnSqlconn();

            SqlCommand comm = new SqlCommand("select * from  [dbo].[Channel_Type]", conn);

            conn.Open();

            SqlDataReader sdr = comm.ExecuteReader();

            GridView2.DataSource = sdr;

            GridView2.DataBind();

        }

 public SqlConnection ReturnSqlconn()

        {

           string connectionString = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

           SqlConnection cn = new SqlConnection(connectionString);

           return cn;

        }