How to use a radio button list control

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I have an asp radiobuttonlist6 with 2 items namely, 'this', and 'that'. If I select 'that' , I want to show 'panel1'. If I select 'this' , I want to hide the 'panel1'. I tried with the following code to show atleast the 'panel1' on any of the button click. I could not succeed in it.
Can any one guide on how to meet my requirements using javascript function. I am poor in javascript. I submit the following with which I tried to some extent.

XML

<script type = "text/javascript">
    function Validate() {
         if (document.getElementById('<% = Radiobuttonlist6.ClientID %>').checked == 'true')
             document.getElementById('<% = Panel1.ClientID %>').style.display = "block";
        }
    }
</script>
<asp:RadioButtonList ID="Radiobuttonlist6" runat="server"
                    RepeatDirection="Vertical"  AutoPostBack="true" style=" margin-left:10px; margin-top:44px" >
                    <asp:ListItem>This</asp:ListItem>
                    <asp:ListItem>That</asp:ListItem>
</asp:RadioButtonList>
<asp:Panel ID="Panel1" runat="server"  Width="33" style=" border-style:groove; height:30px; background-color:Red; margin-top:73px">
    </asp:Panel>

C#

protected void Page_Load(object sender, EventArgs e)
   {
       this.Panel1.Style.Add("display", "none");
       this.Radiobuttonlist6.Attributes.Add("Checked", "Validate()");
   }

Posted 30-Dec-13 0:37am

S.Rajendran from Coimbatore

Add a Solution

3 solutions

Solution 2

JavaScript

<script type="text/javascript">
    function Validate(radioButtonList) {

            for (var i = 0; i < radioButtonList.rows.length; ++i) {

                if (radioButtonList.rows[i].cells[0].firstChild.checked) {

                    if (radioButtonList.rows[i].cells[0].firstChild.value == "This") {
                        document.getElementById('Panel1').style.display = "none";
                    }
                    else
                        document.getElementById('Panel1').style.display = "block";
                }

            }

        }

</script>
<asp:radiobuttonlist id="Radiobuttonlist6" onclick="Validate(this);" runat="server" xmlns:asp="#unknown">
                    RepeatDirection="Vertical" style=" margin-left:10px; margin-top:44px" >
                    <asp:listitem>This</asp:listitem>
                    <asp:listitem>That</asp:listitem>
</asp:radiobuttonlist>
<asp:panel id="Panel1" runat="server" width="33" style="border-style:groove; height:30px; background-color:Red; margin-top:73px" xmlns:asp="#unknown">
    </asp:panel>

Posted 30-Dec-13 1:39am

Vinay Jade

Updated 30-Dec-13 6:45am

v2

Comments

S.Rajendran from Coimbatore 30-Dec-13 10:24am

This I used , not working:
<script type="text/javascript">
function Validate(Radiobuttonlist6) {

for (var i = 0; i < Radiobuttonlist6.rows.length; ++i) {

if (Radiobuttonlist6.rows[i].cells[0].firstChild.checked) {

if (Radiobuttonlist6.rows[i].cells[0].firstChild.value == "This") {
document.getElementById('Panel1').style.display = "none";
}
else
document.getElementById('Panel1').style.display = "block";
}

}

}

</script>
<asp:RadioButtonList ID="Radiobuttonlist6" onclick="Validate(this);" runat="server" xmlns:asp="#unknown"
RepeatDirection="Vertical" style=" margin-left:10px; margin-top:44px" >
<asp:listitem>This
<asp:listitem>That

<asp:panel id="Panel1" runat="server" width="33" style="border-style:groove; height:30px; background-color:Red; margin-top:73px" xmlns:asp="#unknown">

I changed certain things like to Radiobuttonlist6 etc

Solution 3

Its my bad while pasting the code on solution window i paste the code as it is and forget to format as c# code try following

C#

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test1.aspx.cs" Inherits="test1" %>



<html xmlns="http://www.w3.org/1999/xhtml">
<head  runat="server">
    <title></title>
  
    <script type="text/javascript">
        function Validate(radioButtonList) {

            for (var i = 0; i < radioButtonList.rows.length; ++i) {

                if (radioButtonList.rows[i].cells[0].firstChild.checked) {

                    if (radioButtonList.rows[i].cells[0].firstChild.value == "This") {
                        document.getElementById('Panel1').style.display = "none";
                    }
                    else
                        document.getElementById('Panel1').style.display = "block";
                }

            }

        }

</script>
</head>
<body>
    <form id="form1"  runat="server">
    <div>
    
<asp:RadioButtonList id="Radiobuttonlist6" onclick="Validate(this);" runat="server"
                    RepeatDirection="Vertical" style=" margin-left:10px; margin-top:44px" >
                    <asp:Listitem>This</asp:Listitem>
                    <asp:Listitem>That</asp:Listitem>
</asp:RadioButtonList>
<asp:Panel id="Panel1" runat="server" width="33" style="border-style:groove; height:30px; background-color:Red; margin-top:73px">
    </asp:Panel>
    </div>
    </form>
</body>
</html>

Posted 30-Dec-13 6:09am

Vinay Jade

Updated 30-Dec-13 6:15am

v2

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JoCodes · Accepted Answer · 2013-12-30T01:04:00

Solution 1

You can handle it in javascript itselt.

Try

Markup Code:

<asp:RadioButtonList ID="Radiobuttonlist6" runat="server"
                    RepeatDirection="Vertical"  AutoPostBack="true" onclick="Validate('Radiobuttonlist6','Panel1')" style=" margin-left:10px; margin-top:44px" >
                  
<asp:ListItem Text="this" Value="this"></asp:ListItem>  
<asp:ListItem Text="this" Value="that"></asp:ListItem>   
</asp:RadioButtonList>

JS function :

C#

function Validate(rb, panel1)
{
   var rb = document.getElementById('rb');
   var panel = document.getElementById('Panel1');


   var rblist = rb.getElementsByTagName("input");
   for (var i = 0; i < rblist.length; i++)
   {
      if (rblist[i].checked)
      {
         if (rblist[i].value == "this")
         {
            panel.style.display = "block";

         }
         else if (options[i].value == "that")
         {
           panel.style.display = "none";

         }
      }
   }
}

Try and revert

Hope this helps...

Posted 30-Dec-13 1:04am

JoCodes

Updated 30-Dec-13 1:06am

v2

Comments

S.Rajendran from Coimbatore 30-Dec-13 7:27am

Using your guidance, I apllied like this but doesnt work. At certain lines I changed panel to Panel1 and rb to Radiobuttonlist6.

<script type = "text/javascript">
function Validate(rb, panel1) {
var rb = document.getElementById('Radiobuttonlist6');
var panel1 = document.getElementById('Panel1');
var rblist = rb.getElementsByTagName("input");
for (var i = 0; i < rblist.length; i++) {
if (Radiobuttonlist6list[i].checked) {
if (Radiobuttonlist6list[i].value == "this") {
panel1.style.display = "block";
}
else if (Radiobuttonlist6list[i].value == "that") {
panel1.style.display = "none";
}
}
}
}
</script>
<asp:RadioButtonList ID="Radiobuttonlist6" runat="server"
RepeatDirection="Vertical" AutoPostBack="true" onclick="Validate('Radiobuttonlist6','Panel1')" style=" margin-left:10px; margin-top:44px" >
<asp:listitem text="this" value="this" xmlns:asp="#unknown">
<asp:listitem text="that" value="that" xmlns:asp="#unknown">

<asp:Panel ID="Panel1" runat="server" Width="33" style=" border-style:groove; height:30px; background-color:Red; margin-top:73px">

code behind:
protected void Page_Load(object sender, EventArgs e)
{
this.Panel1.Style.Add("display", "none");
this.Radiobuttonlist6.Attributes.Add("Checked", "Validate()");

JoCodes 30-Dec-13 8:33am

remove this.Radiobuttonlist6.Attributes.Add("Checked", "Validate()"); from codebehind. as well as xmlns:asp="#unknown"

S.Rajendran from Coimbatore 30-Dec-13 10:21am

This I used (not working):
<script type = "text/javascript">
function Validate(rb, panel1) {
var rb = document.getElementById('Radiobuttonlist6');
var panel1 = document.getElementById('Panel1');
var rblist = rb.getElementsByTagName("input");
for (var i = 0; i < rblist.length; i++) {
if (Radiobuttonlist6list[i].checked) {
if (Radiobuttonlist6list[i].value == "this") {
panel1.style.display = "block";
}
else if (Radiobuttonlist6list[i].value == "that") {
panel1.style.display = "none";
}
}
}
}
</script>
<asp:RadioButtonList ID="Radiobuttonlist6" runat="server"
RepeatDirection="Vertical" AutoPostBack="true" onclick="Validate('Radiobuttonlist6','Panel1')" style=" margin-left:10px; margin-top:44px" >
<asp:listitem text="this" value="this">
<asp:listitem text="that" value="that">

<asp:Panel ID="Panel1" runat="server" Width="33" style=" border-style:groove; height:30px; background-color:Red; margin-top:73px">

protected void Page_Load(object sender, EventArgs e)
{
this.Panel1.Style.Add("display", "none");
//this.Radiobuttonlist6.Attributes.Add("Checked", "Validate()");
}

JoCodes 30-Dec-13 10:34am

Remove autopostback property for radiobutton

S.Rajendran from Coimbatore 30-Dec-13 21:50pm

I removed 'Autopostback=true' and changed the following 2 lines like this:
var rb = document.getElementById("<%=Radiobuttonlist6.ClientID%>");
var panel1 = document.getElementById("<%=Panel1.ClientID%>");

This worked. Thanks.

JoCodes 31-Dec-13 2:25am

Nice to hear that it helped you. :)