Populating an ASP.NET label with a selection made from a ListBox using a client script. (JavaScript, etc.)

I have a label called Label1 and a Listbox called ListBox1 on an ASP.NET web form.
I am populating Listbox1 with 4 options on the page load event in my code behind.
When the selection in Listbox1 changes, I want this change to be reflected in Label1 by assigning the text value of Label1 to the selection.
I want this action to be performed on the client side only.

How?
TIA
Mike MillerSoftware EngineerAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

leakim971PluritechnicianCommented:
with firefox, do a right on your Listbox1, choose inspect element and post the HTML for this listbox1 here.
else just post the whole body part.
0
Mike MillerSoftware EngineerAuthor Commented:
How about I just post my code so far...

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="test2.aspx.vb" Inherits="Diamond_Group.test2" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="blahblah"></asp:Label>
        <asp:ListBox ID="ListBox1" runat="server"></asp:ListBox>
        <br />
    </div>
    </form>
</body>
</html>

Open in new window


    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            ListBox1.Items.Add("option 1")
            ListBox1.Items.Add("option 2")
            ListBox1.Items.Add("option 3")
            ListBox1.Items.Add("option 4")
            ListBox1.Items.Add("option 5")
            ListBox1.Items.Add("option 6")
        End If
    End Sub

Open in new window

0
leakim971PluritechnicianCommented:
hmmm my comment was clear : with firefox, do a right on your Listbox1, choose inspect element
you can use chrome too or a recent internet explorer
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

Mike MillerSoftware EngineerAuthor Commented:
<select size="4" name="ListBox1" id="ListBox1">
      <option value="option 1">option 1</option>
      <option value="option 2">option 2</option>
      <option value="option 3">option 3</option>
      <option value="option 4">option 4</option>
      <option value="option 5">option 5</option>
      <option value="option 6">option 6</option>

</select>
0
leakim971PluritechnicianCommented:
Test pages :
http://jsfiddle.net/or73pLew/1/
http://jsfiddle.net/or73pLew/3/
<script>
window.onload = function() {
    document.getElementById("ListBox1").onchange = function() {
//        document.getElementById("label1").innerHTML = this.value;
        document.getElementById("label1").innerHTML = this.options[this.selectedIndex].text;
    }
}
</script>

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Mike MillerSoftware EngineerAuthor Commented:
Perfect, thank you.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
JavaScript

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.