protected void Page_Load(object sender, EventArgs e) { if (Request.QueryString["book_id"] == null) { Response.Redirect("index.aspx"); } else { BookBL bookBL = new BookBL(); FormView1.DataSource = bookBL.product(Request.QueryString["book_id"].ToString()); FormView1.DataBind(); string author = ((HyperLink)FormView1.FindControl("HyperLink4")).Text.ToString(); Label15.Text = author; DataList1.DataSource = bookBL.authorBook(author); DataList1.DataBind(); //書籍內容 FormView2.DataSource = bookBL.product(Request.QueryString["book_id"].ToString()); FormView2.DataBind(); //書籍簡介 FormView3.DataSource = bookBL.product(Request.QueryString["book_id"].ToString()); FormView3.DataBind(); //留言板 GridView1.DataSource = bookBL.product_message(Request.QueryString["book_id"].ToString()); GridView1.DataBind(); } }