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3550
Javascript activates server functions
posted

on a dropdown -comboCurrencies,  I attach to client event SelectionChanged.

on  javascript I change items of another dropdown -comboPremium.

The user chooses another item on comboCurrencies.

 on debugging, after the javascript fires, I notice that I reach to the Page_load.

I dont want the JS. to cause me to get to the server function.

Why does this happen?

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Data;

using Infragistics.Web.UI.EditorControls;
using Infragistics.Web.UI.GridControls;


namespace OptionPricer
{
    public partial class Pricer : System.Web.UI.Page
    {

        protected void Page_Load(object sender, EventArgs e)
        {
        }    
    }
}

 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Pricer.aspx.cs" Inherits="OptionPricer.Pricer" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ Register Assembly="Infragistics4.Web.v12.2, Version=12.2.20122.2054, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"
    Namespace="Infragistics.Web.UI.EditorControls" TagPrefix="ig" %>
<%@ Register Assembly="Infragistics4.Web.v12.2, Version=12.2.20122.2054, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"
    Namespace="Infragistics.Web.UI.ListControls" TagPrefix="ig" %>
<%@ Register Assembly="Infragistics4.Web.v12.2, Version=12.2.20122.2054, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"
    Namespace="Infragistics.Web.UI" TagPrefix="ig1" %>
<%@ Register Assembly="Infragistics4.Web.v12.2, Version=12.2.20122.2054, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"
    Namespace="Infragistics.Web.UI.GridControls" TagPrefix="ig" %>
<%@ Register Assembly="Infragistics4.Web.v12.2, Version=12.2.20122.2054, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"
    Namespace="Infragistics.Web.UI.LayoutControls" TagPrefix="ig" %>
<html xmlns="http://www.w3.org/1999/xhtml">

<head id="Head1" runat="server">
<title></title>
    <script type="text/javascript">
        function ComboCurrenciesChanged() {
            var comboPrem = $find("comboPremium");
            comboPrem._elements["List"].innerHtml = '';
            comboPrem.loadItems('ILS', false);
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <ig1:WebScriptManager ID="WebScriptManager1" runat="server">
    </ig1:WebScriptManager>
    <ig:WebDropDown ID="comboCurrencies" ClientIDMode="Static" runat="server">
        <ClientEvents SelectionChanged="ComboCurrenciesChanged" />
        <Items>
            <ig:DropDownItem Key="USD-ILS" Selected="False" Text="USD-ILS" Value="USD-ILS">
            </ig:DropDownItem>
            <ig:DropDownItem Key="EUR-USD" Selected="False" Text="EUR-USD" Value="EUR-USD">
            </ig:DropDownItem>
        </Items>
    </ig:WebDropDown>
    <ig:WebDropDown ID="comboPremium" runat="server" ClientIDMode="Static">
    </ig:WebDropDown>
    </form>
</body>
</html>