radio button event is not fired even when auto post back is true

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i have an aspx page

XML

<%@ Page Title="" Language="C#" MasterPageFile="~/UserArea/MainMaster.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <p>
        <br />
        <asp:RadioButton ID="RadioButton1" runat="server" AutoPostBack="True"
            Checked="True" GroupName="a" oncheckedchanged="RadioButton1_CheckedChanged" />
        <asp:RadioButton ID="RadioButton2" runat="server" AutoPostBack="True"
            GroupName="a" oncheckedchanged="RadioButton2_CheckedChanged" />
    </p>
    <p>
    </p>
</asp:Content>

and c# file

C#

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack)
        RadioButton2.Checked = true;
    }
    protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
    {
//code block
    }
    protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
    {
//code block
    }
}

event radio button checked change is not fired when i clicked on the radio button .plz help.i suffer same problem in edit mode of another page.

Posted 1-May-13 2:21am

rajin kp

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rajin kp 2-May-13 0:59am

see question
http://www.codeproject.com/Questions/586472/radioplusbuttonplusgroupplus-3apluseventplusisplus

2 solutions

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D Hari · Answer 1 · 2013-05-03T04:52:00

Solution 2

if you want the radiobutton1 to be checked by default then you can remove the code on page load to set the radiobutton2 checked as true that should fire the event.

Since the checked property is set to true for both the radiobuttons (in page load and the aspx page) the checkedchanged event is not being fired.

Thank you
Hari

Posted 3-May-13 4:52am

D Hari

Comments

venumadhav.narla777 2-May-19 10:24am

Thanq Saved my day

D Hari · Answer 2 · 2013-05-01T04:07:00

Solution 1

I tried your code. When i remove the default value for checked property for Radiobutton1 then the event fires properly. Please try this for Radiobutton1

VB

<asp:RadioButton ID="RadioButton1" runat="server" AutoPostBack="True"
GroupName="a" oncheckedchanged="RadioButton1_CheckedChanged" />

Posted 1-May-13 4:07am

D Hari

Comments

rajin kp 2-May-13 0:46am

i cant remove default checked property its requirement in my application.During edit mode some times radio button 1 is checked sometimes radio button is checked. consider that first load as edit mode