protected void findrend_Click(object sender, EventArgs e) { con.Open(); string sqladmin = "SELECT * FROM book WHERE BookID = '" + BookIDrend.Text + "' "; SqlCommand cmdAdmin = new SqlCommand(sqladmin, con); SqlDataReader readerAdmin = cmdAdmin.ExecuteReader(); readerAdmin.Read(); if (readerAdmin.HasRows) { //ใส่ข้อมูลหนังสือในตาราง //Label1.Text = readerAdmin[1].ToString(); if (Session["dtInSession"] != null) { dt1 = (DataTable)Session["dtInSession"]; //Getting datatable from session } //Int32 total = Convert.ToInt32(txt_quantity.Text) * Convert.ToInt32(txt_price.Text); DataRow dr = dt1.NewRow(); dr["Customer"] = user; dr["BookID"] = readerAdmin[0].ToString(); dr["NameBook"] = readerAdmin[1].ToString(); dr["price"] = readerAdmin[2].ToString(); // dr["totalPrice"] = GridViewrend.Rows[0].Cells[3].Text; dt1.Rows.Add(dr); Session["dtInSession"] = dt1; //Saving Datatable To Session GridViewrend.DataSource = dt1; GridViewrend.DataBind(); } lblShowPrice.Text = Total; readerAdmin.Close(); con.Close(); }
protected void Page_Load(object sender, EventArgs e) { findUser(); if (!IsPostBack) { gridVIEWData(); GridViewrend.DataSource = dt1; GridViewrend.DataBind(); } }