Get Dropdown list value - set label text

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Hi everyone,

I would like to set a label's text when a dropdownlist item is selected

I want the label to display the value of the item, not the text.

Is there any way i can do so without refreshing the page i found the update panel loads far too long for my liking.

Javascript ???

i would like to do this using attributes

C# Syntax (Toggle Plain Text)
ddBenefitPeriod.Attributes.Add("selectedIndexChanged", string.Format("{0}.innertext = {1}.options[{1}.selectedIndex].value; ", lblBenefitPeriodFactor.ClientID, ddBenefitPeriod.ClientID));
ddBenefitPeriod.Attributes.Add("selectedIndexChanged", string.Format("{0}.innertext = {1}.options[{1}.selectedIndex].value; ", lblBenefitPeriodFactor.ClientID, ddBenefitPeriod.ClientID));

This does not work, can anyone give me some pointers please ??

Thanks in advance

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cVz

Reputation Points: 29

Solved Threads: 7

Junior Poster

Offline

139 posts
since Mar 2008

Permalink

Jun 12th, 2009

Re: Get Dropdown list value - set label text

Try this:

ASP.NET Syntax (Toggle Plain Text)
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="daniweb.web.WebForm1" %>
<!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:dropdownlist ID="Dropdownlist1" runat="server">
				<asp:ListItem Value="Value1">Text1</asp:ListItem>
				<asp:ListItem Value="Value2">Text2</asp:ListItem>
			</asp:dropdownlist>
			<br />
    	<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    </div>
    </form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="daniweb.web.WebForm1" %>
<!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:dropdownlist ID="Dropdownlist1" runat="server">
				<asp:ListItem Value="Value1">Text1</asp:ListItem>
				<asp:ListItem Value="Value2">Text2</asp:ListItem>
			</asp:dropdownlist>
			<br />
    	<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    </div>
    </form>
</body>
</html>

c# Syntax (Toggle Plain Text)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
namespace daniweb.web
{
  public partial class WebForm1 : System.Web.UI.Page
  {
    protected void Page_Load(object sender, EventArgs e)
    {
      string script =
        string.Format("javascript:document.getElementById('{0}').innerText = {1}.options[{1}.selectedIndex].value;", 
        Label1.ClientID,
        Dropdownlist1.ClientID);
      Dropdownlist1.Attributes.Add("onChange", script);
    }
  }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace daniweb.web
{
  public partial class WebForm1 : System.Web.UI.Page
  {
    protected void Page_Load(object sender, EventArgs e)
    {
      string script =
        string.Format("javascript<b></b>:document.getElementById('{0}').innerText = {1}.options[{1}.selectedIndex].value;", 
        Label1.ClientID,
        Dropdownlist1.ClientID);
      Dropdownlist1.Attributes.Add("onChange", script);
    }
  }
}

sknake

Featured Poster

Reputation Points: 1749

Solved Threads: 735

Senior Poster

Offline

3,948 posts
since Feb 2009

Permalink

Jun 27th, 2009

Re: Get Dropdown list value - set label text

on dropdown selectedIndex change event

LabelName.Text = dropdownList.SelectedValue.toString();

dnanetwork

Reputation Points: 28

Solved Threads: 106

Banned

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633 posts
since May 2008

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

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