how to add datalist item to temporary cart table in asp.net

Question

hi every one i would like to add my datalist item to temporary cart table (data table)  when i am click on image buttton of datalist item ..plz tel me already i am tried some  but it was showing one item detail repeated  and also if i am click on another item previous item was lost from data table please help me.... my c# code ------------------ protected void dl_beers_ItemCommand(object source DataListCommandEventArgs e) { if (e.CommandName == item_plus) { // Label lblprice = (Label)(e.Item.FindControl(lbl_beer_price)); Label lblcart = (Label)(e.Item.FindControl(lbl_items_order)); Label lblitem = (Label)(e.Item.FindControl(lbl_beer_name)); Label lblpid = (Label)(e.Item.FindControl(lbl_pid)); int order = Convert.ToInt16(lblcart.Text); order = order + 1; int index = e.Item.ItemIndex; Label lblprice = (Label)dl_beers.Items[index].FindControl(lbl_beer_price); //for price float price = float.Parse(lblprice.Text); price = price * order; Convert.ToSingle(price); //add to cart DataTable dt = new DataTable(); dt.Columns.Add(pidtypeof(string)); dt.Columns.Add(pnametypeof(string)); dt.Columns.Add(pprice typeof(string)); for (int i = dt.Rows.Count; i { dt.Rows.Add(lblpid.Text lblitem.Text lblprice.Text); addtocart(); ViewState[dt] = dt; this.BindGrid(); } lblcart.Text = Convert.ToString(order); } if (e.CommandName == item_minus) { // int ordercount = Convert.ToInt16(spn_beersorder.InnerText); Label lblcart = (Label)(e.Item.FindControl(lbl_items_order)); int order = Convert.ToInt16(lblcart.Text); if (order > 0) { order = order - 1; // beers_order = order; lblcart.Text = Convert.ToString(order); // ordercount = ordercount - 1; // spn_beersorder.InnerText = Convert.ToString(ordercount); } else { order = 0; lblcart.Text = Convert.ToString(order); // spn_beersorder.InnerText = Convert.ToString(order+x); } } } my aspx code ---------------------- Item Name Volume Price Order ' runat=server /> '> '> '> ' runat=server /> ' CommandName=item_plus runat=server /> '> // cart view

Midhun T P · Answer

Hi You are creating Datatable inside itemcommand block. Instead you should declare it globally. Else every time item command is executed datatable loses old records and contains only current rows. Hence cart will only shows current record.

Vishal Jadav · Answer

Hi It can be achieved by creating a session variable which can hold the data table you created with values. Steps. -------------- 1. First time check the session variable is empty then create a datatable with required columns and assign it to the Session Variable. 2. When you add the rows each time above code will be checked and if Session is not null means it has a datatable inside it then just convert Session variable to Datatable and add row to it. 3. Same way to update the cart values you can check the session and if found then update. 4. Finally upload data from session to db. Thats it. Hope it helps. Thanks. Cheers..

eswar rao · Answer

thank you boss i am applyed code as like what you say..but it is not working plz..write a code for that methods only if u free i hope you understand my problem..thnak you

Midhun T P · Answer

Hi Take this block DataTable dt = new DataTable(); dt.Columns.Add(pidtypeof(string)); dt.Columns.Add(pnametypeof(string)); dt.Columns.Add(pprice typeof(string)); outside of  dl_beers_ItemCommand method and put it globally just before protected void Page_Load(object sender EventArgs e)

eswar rao · Answer

thank you for given response to my qutn .. ok  can you please tel me how i can i do this...