... sqlChiTietSach.UpdateParameters.Add("TenSach", TenSach); sqlChiTietSach.UpdateParameters.Add("MaDanhMuc", MaDanhMuc); sqlChiTietSach.UpdateParameters.Add("NXB", ... sqlChiTietSach.UpdateParameters.Clear(); //Bc 1: Khai bo TextBox txt = newTextBox(); Label lb = newLabel(); string TenSach, MaDanhMuc, NXB, TacGia, Gia, TomTatNoiDung, UrlAnh,GhiChu, MaSach; //Bc 2: Ly gi ... (TextBox)e.Item.FindControl("txtTomTat"); TomTatNoiDung = txt.Text; // txt = (TextBox)e.Item.FindControl("txtUrlAnh"); UrlAnh = txt.Text; // txt = (TextBox)e.Item.FindControl("txtGhiChu"); GhiChu =...