Hey
I installed the Asp.net Ajax toolkit. In my site I use the NummericUpDown from that toolkit.
Now, I want that a label changes when the NummericUpDown Textboxes changes. I try to use JavaScript for this, but I always get the following error:
'ASP.orders_aspx' does not contain a definition for 'changeAmount' and no extension method 'changeAmount' accepting a first argument of type 'ASP.orders_aspx' could be found (are you missing a using directive or an
assembly reference?)
This is my code:
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"
CodeFile="orders.aspx.cs" Inherits="orders" Title="the BookStore" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
<script type="text/javascript">
function changeAmount()
{
var amount = document.getElementById("txtCount");
var total = 10 * amount.value;
document.getElementById("lblPrice").value = total;
}
</script>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
<ajaxToolkit:ToolkitScriptManager runat="Server" EnablePartialRendering="true" ID="ScriptManager1" />
<h1 id="H1" runat="server">
Bestellen</h1>
<asp:Panel ID="pnlZoeken" runat="server" Visible="true">
<asp:ObjectDataSource ID="objdsSelectedBooks" runat="server" OnSelecting="objdsSelectedBooks_Selecting"
TypeName="DAL.BooksDAL"></asp:ObjectDataSource>
<h3>
Overzicht van het gekozen boek</h3>
<asp:FormView ID="fvBestelBoek" runat="server" Width="650">
<ItemTemplate>
<h3>
Aantal boeken bestellen</h3>
<table width="650">
<tr class="txtBox">
<td>
Boek
</td>
<td>
Prijs
</td>
<td>
Aantal
</td>
<td>
Korting
</td>
<td>
Totale Prijs
</td>
</tr>
<tr>
<td>
<%# Eval("TITLE") %>
</td>
<td>
<asp:Label ID="lblPrice" runat="server" Text='<%# Eval("PRICE") %>' />
</td>
<td>
<asp:TextBox OnTextChanged="changeAmount()" ID="txtCount" runat="server"></asp:TextBox>
<ajaxToolkit:NumericUpDownExtender ID="NumericUpDownExtender1" runat="server" TargetControlID="txtCount"
Width="50" Minimum="1" ServiceDownMethod="" ServiceUpMethod="" />
</td>
<td>
-
</td>
<td>
<asp:Label ID="lblAmount" runat="server" />
</td>
</tr>
</table>
</ItemTemplate>
</asp:FormView>
<asp:Button ID="btnBestel" runat="server" CssClass="btn" Text="Bestel" OnClick="btnBestel_Click1" />
<asp:Button ID="btnReChoose" runat="server" CssClass="btnDelete" Text="Kies een ander boek"
OnClick="btnRechoose_Click" />
</asp:Panel>
</asp:Content>
Does anyone know the answer?
Thanks a lot, Vincent
