How to show a radiobuttonlist control's selected list item

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WebForm1.aspx

<body>
    <form id="form1" runat="server">>
        <div style="width:180px;height:200px;overflow:scroll;">
            <asp:RadioButtonList ID="rdlCountries" runat="server" AutoPostBack="t 
  rue"              OnSelectedIndexChanged="rdlCountries_SelectedIndexChan&</asp:RadioButtonList>
        </div>
        <br>
        <asp:Label ID="lblSelectedRadioItem" runat="server">></asp:Label>
    </form>

C#

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bindCountries();
            }
        }

        private void bindCountries()
        {
            rdlCountries.Items.Add("India");
            rdlCountries.Items.Add("USA");
            rdlCountries.Items.Add("UK");
            rdlCountries.Items.Add("Brazil");
            rdlCountries.Items.Add("England");
            rdlCountries.Items.Add("Telangana");
            rdlCountries.Items.Add("AP");
            rdlCountries.Items.Add("MP");
            rdlCountries.Items.Add("UP");
            rdlCountries.Items.Add("HP");
            rdlCountries.Items.Add("Tail"); 
            rdlCountries.Items.Add("Fra");
            rdlCountries.Items.Add("Par"); 
            rdlCountries.Items.Add("gni");
            rdlCountries.Items.Add("Pd");
            rdlCountries.Items.Add("sinka"); 
            rdlCountries.Items.Add("Aulia");
            rdlCountries.Items.Add("WestIndies");
            rdlCountries.Items.Add("France");
            rdlCountries.Items.Add("Par");
            rdlCountries.Items.Add("geri"); 
            rdlCountries.Items.Add("Poland");
            rdlCountries.Items.Add("srinka");
            rdlCountries.Items.Add("Austlia");
            rdlCountries.Items.Add("Eland");
            rdlCountries.Items.Add("Westdies"); 
            rdlCountries.Items.Add("Frce");
            rdlCountries.Items.Add("Pais"); 
            rdlCountries.Items.Add("germi"); 
            rdlCountries.Items.Add("Pond");
            rdlCountries.Items.Add("srinka"); 
            rdlCountries.Items.Add("Austria");
        }
        protected void rdlCountries_SelectedIndexChanged(object sender, EventArgs e)
        {
            lblSelectedRadioItem.Text = "Selected RadioButtonListItem Name is " + rdlCountries.SelectedItem.ToString() + "";
        }

What I have tried:

I am beginner to Coding and .net,
When I select last listItem,after reloading the page its showing first radiobuttonlist items...
but, I want to show the listitem what I selected in the list.
Plz help me in this scenario.
Thanks in Advance

Posted 10-Aug-16 7:46am

VeenGreen

Updated 10-Aug-16 7:59am

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Comments

Karthik_Mahalingam 10-Aug-16 13:56pm

try using javascript/jquery, since the size of the container is small when the post back happens, automatically the focus will be moved to the first item. tried with update panel also, no luck..

1 solution

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Karthik_Mahalingam · Accepted Answer · 2016-08-10T07:59:00

Solution 1

try this

JavaScript

<script>
       function funChange() {
           var list = document.getElementById('<%= rdlCountries.ClientID %>');
           var inputs = list.getElementsByTagName("input");
           var selectedItem;
           for (var i = 0; i < inputs.length; i++) {
               if (inputs[i].checked) {
                   selectedItem = inputs[i];
                   break;
               }
           }
           document.getElementById('<%= lblSelectedRadioItem.ClientID %>').textContent = selectedItem.value;
       }
   </script>

ASP.NET

<asp:radiobuttonlist id="rdlCountries" runat="server" onchange="funChange()"  ></asp:radiobuttonlist>

Posted 10-Aug-16 7:59am

Karthik_Mahalingam

Updated 10-Aug-16 8:00am

v2

Comments

VeenGreen 10-Aug-16 22:43pm

When I select last listItem,after reloading the radiobuttonlist items going top
but, I want to show the listitem what I selected in the list,Not in the Label.I tried Your Suggested code.but its not highlighting the selected Item(means coming in front of user eye)

Karthik_Mahalingam 10-Aug-16 23:37pm

coz the post back is still happening.

use exactly this
<asp:radiobuttonlist id="rdlCountries" runat="server" onchange="funChange()" >

VeenGreen 11-Aug-16 13:13pm

Thanks for your suggestion...it's working..

Karthik_Mahalingam 11-Aug-16 13:14pm

cool

VeenGreen 11-Aug-16 23:27pm

Thank you again..

Karthik_Mahalingam 11-Aug-16 23:29pm

Welcome :)