drop down list display

Question

Hi i want a drop down menu to choose how many of that ITEMS they want to purchase. The max number in that box should be the max number of items we have in stock for that base and add. drop down list consist  12345 that way if someone chooses that item and then choose the blank space and it will remove that item from what they want to purchase. For example if we have 4 items in stock the drop down box will go blank 1 2 3 4 . Here i need how to write code for dropdown list to update automatically when stock is reduces.

Francis · Answer

You should code like below: Mark up (aspx file) asp : DropDownList runat =server ID =ddlStockCount> asp : DropDownList > Code behind: (aspx.cs file) protected void Page_Load( object sender EventArgs e) { if (!Page.IsPostBack) // Check the page is freshly loaded { //Get the stock count from DB omitted for simplicity int stockcount = 5; // Add the items count to Dropdown for ( int i=1;i { ListItem li = new ListItem ( Convert .ToString(i) Convert .ToString(i)); ddlStockCount.Items.Add(li); } // finally add an empty item ListItem litem = new ListItem ( String .Empty string .Empty); ddlStockCount.Items.Add(litem); //select the empty item by default litem.Selected = true ; } }